Created attachment 291832 [details]
Log1

Thanks for taking the time to report this bug.
Without a stack trace from the crash it's very hard to determine what caused it.
Can you get us a stack trace? Please see http://live.gnome.org/GettingTraces for more information on how to do so. Thanks in advance!

Thanks for the link, here is it:

gdb rhythmbox
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from rhythmbox...Reading symbols from /usr/lib/debug/.build-id/1f/191d37890193d425e57153f57986ba6cd24f3e.debug...done.
done.
(gdb) run
Starting program: /usr/bin/rhythmbox 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe1fc2700 (LWP 6363)]
[New Thread 0x7fffe17c1700 (LWP 6364)]

(rhythmbox:6359): Gtk-CRITICAL **: gtk_css_provider_load_from_path: assertion 'path != NULL' failed
[New Thread 0x7fffdae6f700 (LWP 6365)]
[New Thread 0x7fffda66e700 (LWP 6366)]
[New Thread 0x7fffbb831700 (LWP 6367)]
[New Thread 0x7fffb9bd6700 (LWP 6368)]
[Thread 0x7fffdae6f700 (LWP 6365) exited]

(rhythmbox:6359): GLib-GObject-CRITICAL **: object SoupServer 0x1089960 finalized while still in-construction

(rhythmbox:6359): GLib-GObject-CRITICAL **: Custom constructor for class SoupServer returned NULL (which is invalid). Please use GInitable instead.
[New Thread 0x7fffdae6f700 (LWP 6370)]
[Thread 0x7fffdae6f700 (LWP 6370) exited]
[Thread 0x7fffb9bd6700 (LWP 6368) exited]
[Thread 0x7fffbb831700 (LWP 6367) exited]
[New Thread 0x7fffbb831700 (LWP 6371)]
[New Thread 0x7fffb9bd6700 (LWP 6372)]
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
(rhythmbox:6359): Json-CRITICAL **: json_object_get_array_member: assertion 'JSON_NODE_HOLDS_ARRAY (node) || JSON_NODE_HOLDS_NULL (node)' failed

(rhythmbox:6359): Json-CRITICAL **: json_array_get_length: assertion 'array != NULL' failed
[New Thread 0x7fffdae6f700 (LWP 6400)]
[New Thread 0x7fffb28f6700 (LWP 6401)]

(rhythmbox:6359): GLib-GObject-WARNING **: g_object_set_valist: object class 'GtkSeparator' has no property named 'margin-start'

(rhythmbox:6359): GLib-GObject-WARNING **: g_object_set_valist: object class 'GtkSeparator' has no property named 'margin-start'
[Thread 0x7fffda66e700 (LWP 6366) exited]
[New Thread 0x7fffda66e700 (LWP 6402)]
[Thread 0x7fffda66e700 (LWP 6402) exited]
[New Thread 0x7fffb0c6a700 (LWP 6404)]
[New Thread 0x7fff620f5700 (LWP 6405)]
[Thread 0x7fff620f5700 (LWP 6405) exited]

(rhythmbox-metadata:6407): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6418): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6429): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6440): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6451): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6487): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6498): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6509): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6520): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6531): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6542): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6553): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6564): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6575): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6586): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6597): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6608): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6619): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6630): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6641): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6677): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6688): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6699): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6710): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6721): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6732): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6743): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6754): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6765): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fff60065700 (LWP 6777)]

(rhythmbox-metadata:6776): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fff5f233700 (LWP 6785)]
[New Thread 0x7fff5ea32700 (LWP 6786)]
[New Thread 0x7fff5de10700 (LWP 6787)]
[New Thread 0x7fff5cb2d700 (LWP 6790)]
[New Thread 0x7fff53ffe700 (LWP 6791)]
[New Thread 0x7fff537fd700 (LWP 6794)]
[New Thread 0x7fff52ffc700 (LWP 6795)]
[New Thread 0x7fff527fb700 (LWP 6796)]

(rhythmbox-metadata:6793): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6807): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6818): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6854): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[Thread 0x7fff527fb700 (LWP 6796) exited]

(rhythmbox-metadata:6865): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6876): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[Thread 0x7fff52ffc700 (LWP 6795) exited]

(rhythmbox-metadata:6887): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6898): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6909): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6920): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6931): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6942): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6953): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6964): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6975): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fff52ffc700 (LWP 6987)]
[Thread 0x7fff52ffc700 (LWP 6987) exited]

(rhythmbox-metadata:6986): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:6998): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7023): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7045): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7056): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7067): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7078): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7089): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7100): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7111): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7122): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7133): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7144): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7155): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7166): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7177): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7189): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7225): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7236): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7247): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7258): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7269): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7280): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7291): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7302): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7313): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7324): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7335): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7346): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7357): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7368): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7379): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7415): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7426): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7437): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7448): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7459): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7470): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7481): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7492): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7505): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7516): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7528): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7539): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7550): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7586): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7597): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7608): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7619): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7630): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7641): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7652): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7663): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7674): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7685): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7696): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7707): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7718): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7729): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7740): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7777): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7788): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7799): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7810): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7821): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7832): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7843): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7854): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7865): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7876): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7887): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7898): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[Thread 0x7fff537fd700 (LWP 6794) exited]

(rhythmbox-metadata:7909): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7920): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7941): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7967): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7978): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:7989): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8000): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8011): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8022): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8033): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8044): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8055): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8066): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8077): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8088): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8099): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8110): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8143): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8157): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8168): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8179): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8190): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8201): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8212): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8223): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8234): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8245): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8256): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8267): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8278): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8289): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8326): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8337): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8348): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8359): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8370): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8381): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8392): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8403): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8414): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8425): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8436): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8447): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8458): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8469): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8505): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8516): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8527): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8538): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8549): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8560): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8571): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8582): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8593): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8604): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8615): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8626): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8637): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8661): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8684): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8695): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8706): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8717): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8728): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8740): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8751): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8762): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8773): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8784): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8795): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8806): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8823): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8853): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8864): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8875): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8886): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8897): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8908): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8919): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8930): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8930): GStreamer-CRITICAL **: gst_mini_object_make_writable: assertion 'mini_object != NULL' failed

(rhythmbox-metadata:8965): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fff537fd700 (LWP 9069)]
[New Thread 0x7fff527fb700 (LWP 9070)]
[Thread 0x7fff527fb700 (LWP 9070) exited]
[Thread 0x7fff537fd700 (LWP 9069) exited]
[Thread 0x7fff60065700 (LWP 6777) exited]
[New Thread 0x7fff60065700 (LWP 9526)]
[New Thread 0x7fff537fd700 (LWP 9527)]
[New Thread 0x7fff527fb700 (LWP 9528)]
[Thread 0x7fff537fd700 (LWP 9527) exited]
[Thread 0x7fff527fb700 (LWP 9528) exited]
[Thread 0x7fff5f233700 (LWP 6785) exited]
[New Thread 0x7fff527fb700 (LWP 9572)]
[New Thread 0x7fff5f233700 (LWP 9575)]
[Thread 0x7fff527fb700 (LWP 9572) exited]
[Thread 0x7fff60065700 (LWP 9526) exited]
[New Thread 0x7fff60065700 (LWP 9657)]
[New Thread 0x7fff527fb700 (LWP 9658)]
[Thread 0x7fff527fb700 (LWP 9658) exited]
[Thread 0x7fff60065700 (LWP 9657) exited]
[New Thread 0x7fff60065700 (LWP 9684)]
[New Thread 0x7fff527fb700 (LWP 9685)]
[New Thread 0x7fff537fd700 (LWP 9686)]
[Thread 0x7fff537fd700 (LWP 9686) exited]
[Thread 0x7fff527fb700 (LWP 9685) exited]
[Thread 0x7fff60065700 (LWP 9684) exited]
[New Thread 0x7fff60065700 (LWP 9739)]
[New Thread 0x7fff527fb700 (LWP 9740)]
[Thread 0x7fff527fb700 (LWP 9740) exited]
[New Thread 0x7fff527fb700 (LWP 9770)]
[Thread 0x7fff527fb700 (LWP 9770) exited]
[Thread 0x7fff60065700 (LWP 9739) exited]
[New Thread 0x7fff60065700 (LWP 9796)]
[New Thread 0x7fff51ffa700 (LWP 9797)]
[Thread 0x7fff51ffa700 (LWP 9797) exited]
[Thread 0x7fff60065700 (LWP 9796) exited]
[New Thread 0x7fff60065700 (LWP 9798)]
[New Thread 0x7fff51ffa700 (LWP 9799)]
[Thread 0x7fff51ffa700 (LWP 9799) exited]
[Thread 0x7fff5f233700 (LWP 9575) exited]
[Thread 0x7fff60065700 (LWP 9798) exited]
[New Thread 0x7fff60065700 (LWP 9861)]
[New Thread 0x7fff5f233700 (LWP 9862)]
[New Thread 0x7fff51ffa700 (LWP 9863)]
[Thread 0x7fff51ffa700 (LWP 9863) exited]
[New Thread 0x7fff51ffa700 (LWP 9864)]
[Thread 0x7fff51ffa700 (LWP 9864) exited]
[Thread 0x7fff60065700 (LWP 9861) exited]
[New Thread 0x7fff60065700 (LWP 9865)]
[New Thread 0x7fff517f9700 (LWP 9866)]
[New Thread 0x7fff50ff8700 (LWP 9867)]
[Thread 0x7fff517f9700 (LWP 9866) exited]
[Thread 0x7fff50ff8700 (LWP 9867) exited]
[Thread 0x7fff60065700 (LWP 9865) exited]
[New Thread 0x7fff60065700 (LWP 9943)]
[New Thread 0x7fff50ff8700 (LWP 9944)]
[New Thread 0x7fff517f9700 (LWP 9945)]
[Thread 0x7fff517f9700 (LWP 9945) exited]
[Thread 0x7fff50ff8700 (LWP 9944) exited]
[Thread 0x7fff60065700 (LWP 9943) exited]
[New Thread 0x7fff60065700 (LWP 9946)]
[New Thread 0x7fff50ff8700 (LWP 9947)]
[New Thread 0x7fff517f9700 (LWP 9948)]
[New Thread 0x7fff33fff700 (LWP 9974)]
[Thread 0x7fff33fff700 (LWP 9974) exited]
[Thread 0x7fff517f9700 (LWP 9948) exited]
[Thread 0x7fff50ff8700 (LWP 9947) exited]
[Thread 0x7fff60065700 (LWP 9946) exited]
[New Thread 0x7fff60065700 (LWP 9975)]
[New Thread 0x7fff50ff8700 (LWP 9976)]
[New Thread 0x7fff517f9700 (LWP 9977)]
[Thread 0x7fff5f233700 (LWP 9862) exited]
[Thread 0x7fff517f9700 (LWP 9977) exited]
[Thread 0x7fff50ff8700 (LWP 9976) exited]
[New Thread 0x7fff517f9700 (LWP 10114)]
[New Thread 0x7fff50ff8700 (LWP 10115)]
[Thread 0x7fff517f9700 (LWP 10114) exited]
[Thread 0x7fff50ff8700 (LWP 10115) exited]

(rhythmbox:6359): Gtk-CRITICAL **: gtk_box_reorder_child: assertion 'old_link != NULL' failed

(rhythmbox:6359): Gtk-CRITICAL **: gtk_grid_attach: assertion 'gtk_widget_get_parent (child) == NULL' failed

(rhythmbox:6359): Gtk-WARNING **: GtkGrid does not have a property called expand

(rhythmbox:6359): Gtk-WARNING **: GtkGrid does not have a property called fill

(rhythmbox:6359): Gtk-WARNING **: GtkGrid does not have a property called position
[New Thread 0x7fff50ff8700 (LWP 10495)]
[New Thread 0x7fff517f9700 (LWP 10496)]
[New Thread 0x7fff5f233700 (LWP 10497)]
[New Thread 0x7fff2bde5700 (LWP 10498)]
[New Thread 0x7fff2b1e4700 (LWP 10499)]
[New Thread 0x7fff29d51700 (LWP 10575)]
[Thread 0x7fff29d51700 (LWP 10575) exited]
[Thread 0x7fff2b1e4700 (LWP 10499) exited]
[New Thread 0x7fff292c9700 (LWP 10627)]
[New Thread 0x7fff2b1e4700 (LWP 10628)]
[Thread 0x7fff292c9700 (LWP 10627) exited]
[Thread 0x7fff2b1e4700 (LWP 10628) exited]
[New Thread 0x7fff2b1e4700 (LWP 11132)]
[New Thread 0x7fff292c9700 (LWP 11133)]
[Thread 0x7fff2b1e4700 (LWP 11132) exited]
[New Thread 0x7fff2b1e4700 (LWP 11134)]
[Thread 0x7fff2b1e4700 (LWP 11134) exited]
[Thread 0x7fff292c9700 (LWP 11133) exited]
[New Thread 0x7fff292c9700 (LWP 11618)]
[New Thread 0x7fff23fff700 (LWP 11619)]
[Thread 0x7fff292c9700 (LWP 11618) exited]
[New Thread 0x7fff292c9700 (LWP 11671)]
[New Thread 0x7fff237fe700 (LWP 11672)]
[New Thread 0x7fff22ffd700 (LWP 11698)]
[New Thread 0x7fff227fc700 (LWP 11775)]
[Thread 0x7fff227fc700 (LWP 11775) exited]
[Thread 0x7fff60065700 (LWP 9975) exited]
[New Thread 0x7fff60065700 (LWP 11826)]
[New Thread 0x7fff227fc700 (LWP 11827)]
[Thread 0x7fff227fc700 (LWP 11827) exited]
[Thread 0x7fff60065700 (LWP 11826) exited]
[New Thread 0x7fff60065700 (LWP 11853)]
[New Thread 0x7fff227fc700 (LWP 11854)]
[Thread 0x7fff227fc700 (LWP 11854) exited]
[New Thread 0x7fff227fc700 (LWP 11880)]
[Thread 0x7fff227fc700 (LWP 11880) exited]
[Thread 0x7fff22ffd700 (LWP 11698) exited]
[New Thread 0x7fff22ffd700 (LWP 12133)]
[New Thread 0x7fff227fc700 (LWP 12134)]
[Thread 0x7fff22ffd700 (LWP 12133) exited]
[Thread 0x7fff227fc700 (LWP 12134) exited]
[New Thread 0x7fff227fc700 (LWP 12661)]
[New Thread 0x7fff22ffd700 (LWP 12662)]
[Thread 0x7fff22ffd700 (LWP 12662) exited]
[Thread 0x7fff227fc700 (LWP 12661) exited]
[New Thread 0x7fff227fc700 (LWP 13152)]
[New Thread 0x7fff22ffd700 (LWP 13153)]
[Thread 0x7fff22ffd700 (LWP 13153) exited]
[Thread 0x7fff227fc700 (LWP 13152) exited]
[New Thread 0x7fff227fc700 (LWP 13664)]
[New Thread 0x7fff22ffd700 (LWP 13665)]
[Thread 0x7fff22ffd700 (LWP 13665) exited]
[New Thread 0x7fff22ffd700 (LWP 13692)]
[Thread 0x7fff22ffd700 (LWP 13692) exited]

(rhythmbox:6359): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff23fff700 (LWP 11619)]
0x00007fff21599f12 in ?? ()
   from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstlibav.so
(gdb) thread apply all bt

+ Trace 234386

Looks like you were playing a .wma file and the libav decoder crashed.  Can you identify the file?  Does it crash every time you try to play it?

Ok, thank you very much, I figured this is consistent with EVERY wma file, also with totem and vlc... Even nautilus crashes on opening a wma-files preferences... Any ideas on what to do next? :)

Install debug symbols for gst-libav (I'm not sure what the package name is for your distribution) and get another stack trace, then we can move the bug over to gstreamer to see what they think about it.

steven@Swiffundweg:~$ gdb rhythmbox
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from rhythmbox...Reading symbols from /usr/lib/debug/.build-id/1f/191d37890193d425e57153f57986ba6cd24f3e.debug...done.
done.
(gdb) run
Starting program: /usr/bin/rhythmbox 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe1fc2700 (LWP 8921)]
[New Thread 0x7fffe1355700 (LWP 8922)]

(rhythmbox:8917): Gtk-CRITICAL **: gtk_css_provider_load_from_path: assertion 'path != NULL' failed
[New Thread 0x7fffdae6f700 (LWP 8923)]
[New Thread 0x7fffda66e700 (LWP 8924)]
[New Thread 0x7fffd9e6d700 (LWP 8925)]
[New Thread 0x7fffb7330700 (LWP 8926)]
[New Thread 0x7fffb54cf700 (LWP 8927)]
[Thread 0x7fffd9e6d700 (LWP 8925) exited]
[Thread 0x7fffda66e700 (LWP 8924) exited]

(rhythmbox:8917): GLib-GObject-CRITICAL **: object SoupServer 0xf6af90 finalized while still in-construction

(rhythmbox:8917): GLib-GObject-CRITICAL **: Custom constructor for class SoupServer returned NULL (which is invalid). Please use GInitable instead.
[New Thread 0x7fffda66e700 (LWP 8929)]
[Thread 0x7fffda66e700 (LWP 8929) exited]
[Thread 0x7fffb54cf700 (LWP 8927) exited]
[Thread 0x7fffb7330700 (LWP 8926) exited]
[New Thread 0x7fffb7330700 (LWP 8930)]
[New Thread 0x7fffb54cf700 (LWP 8931)]
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
(rhythmbox:8917): Json-CRITICAL **: json_object_get_array_member: assertion 'JSON_NODE_HOLDS_ARRAY (node) || JSON_NODE_HOLDS_NULL (node)' failed

(rhythmbox:8917): Json-CRITICAL **: json_array_get_length: assertion 'array != NULL' failed
[New Thread 0x7fffda66e700 (LWP 8958)]
[New Thread 0x7fffd9e6d700 (LWP 8959)]

(rhythmbox:8917): GLib-GObject-WARNING **: g_object_set_valist: object class 'GtkSeparator' has no property named 'margin-start'

(rhythmbox:8917): GLib-GObject-WARNING **: g_object_set_valist: object class 'GtkSeparator' has no property named 'margin-start'
[Thread 0x7fffdae6f700 (LWP 8923) exited]
[New Thread 0x7fffdae6f700 (LWP 8960)]
[Thread 0x7fffdae6f700 (LWP 8960) exited]
[New Thread 0x7fffac84c700 (LWP 8962)]
[New Thread 0x7fff5e0f5700 (LWP 8963)]
[New Thread 0x7fff5d8f4700 (LWP 8964)]
[Thread 0x7fff5d8f4700 (LWP 8964) exited]
[Thread 0x7fffac84c700 (LWP 8962) exited]

(rhythmbox-metadata:8966): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8977): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8988): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:8999): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9035): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9046): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9057): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9068): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9079): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9090): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9101): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9112): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9123): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9134): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9145): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9156): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9167): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9178): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9214): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9225): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9236): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9247): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9258): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9269): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9280): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9291): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9302): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9313): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9324): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9335): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9346): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9357): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9393): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9404): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9415): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9426): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9437): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9448): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9459): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9470): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9481): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9492): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9503): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9514): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fffac84c700 (LWP 9522)]
[Thread 0x7fffac84c700 (LWP 9522) exited]

(rhythmbox-metadata:9526): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9562): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9573): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9584): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9595): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9606): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9617): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9628): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9639): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9650): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9661): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9672): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9683): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9694): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9705): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9741): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9752): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9763): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9774): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9785): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9796): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9807): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9818): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9829): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9840): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9851): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9862): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9873): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9884): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9921): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9932): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9943): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9954): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9965): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9976): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9987): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:9998): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10009): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10020): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10031): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10042): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10053): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10064): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10100): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10111): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10122): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10133): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10144): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10155): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10166): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10177): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10188): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10199): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10210): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10221): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10232): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10243): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10279): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10290): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10301): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10312): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10323): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10334): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10345): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10356): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10367): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10378): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10389): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10400): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10411): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[Thread 0x7fffb54cf700 (LWP 8931) exited]

(rhythmbox-metadata:10447): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10458): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10469): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10480): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10491): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10502): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10514): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10525): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10536): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10547): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10558): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10569): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10580): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10591): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10627): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10638): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10649): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10660): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10671): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10682): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10693): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10704): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10715): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10726): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10737): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10748): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10759): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10770): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10781): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10817): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10829): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10840): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10851): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10862): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10873): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10884): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10895): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10906): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10917): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10928): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10939): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10950): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10961): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:10997): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11008): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11019): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11030): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11041): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11052): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11063): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11074): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11085): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11097): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11108): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11119): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11130): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11141): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11177): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11188): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11199): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11210): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11221): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11232): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11243): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11254): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11265): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11276): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11287): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11298): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11309): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11320): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11356): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11367): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11378): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11389): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11400): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11411): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11422): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11433): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11444): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11455): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11466): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11477): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed

(rhythmbox-metadata:11477): GStreamer-CRITICAL **: gst_mini_object_make_writable: assertion 'mini_object != NULL' failed

(rhythmbox-metadata:11513): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fffb54cf700 (LWP 11618)]
[New Thread 0x7fff5d0f3700 (LWP 11619)]
[Thread 0x7fffb54cf700 (LWP 11618) exited]
[New Thread 0x7fffb54cf700 (LWP 11645)]
[Thread 0x7fffb54cf700 (LWP 11645) exited]
[Thread 0x7fff5d0f3700 (LWP 11619) exited]
[New Thread 0x7fff5d0f3700 (LWP 11972)]
[New Thread 0x7fffb54cf700 (LWP 11973)]
[New Thread 0x7fff5532d700 (LWP 11974)]
[New Thread 0x7fff54928700 (LWP 11975)]

(rhythmbox:8917): GStreamer-CRITICAL **: gst_structure_new_empty: assertion 'gst_structure_validate_name (name)' failed
[New Thread 0x7fff47fff700 (LWP 11976)]
[New Thread 0x7fff477fe700 (LWP 11977)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff54928700 (LWP 11975)]
gst_ffmpegauddec_frame (ffmpegdec=0x0, ffmpegdec@entry=0x7fff500aa830, 
    data=data@entry=0x7fff5000fa2b "\t", size=0, size@entry=5945, 
    got_data=0x200000000, got_data@entry=0x7fff54927758, 
    ret=ret@entry=0x7fff5492775c) at gstavauddec.c:644
644	gstavauddec.c: Datei oder Verzeichnis nicht gefunden.
(gdb) thread apply all bt

+ Trace 234388

Thanks.  I can't see any recent changes in libav that might address this, or any existing bug reports, so I'm reassigning to GStreamer.

We would need more information to help you:

1) Version of GStreamer running
2) A sample media that reproduce the issue

Also which Linux distribution is this and are you using their (which?) packages for gst-libav?

Ubuntu 14.04
Some packages (libav-related) come from this PPA: http://ppa.launchpad.net/jon-severinsson/ffmpeg/ubuntu
The rest should be the newest standard ubuntu packages...

As far as I have tested, all of my wmv files are affected. I'm uploading one anyway.

dpkg-query --show *gstreamer*
bluez-gstreamer	4.101-0ubuntu13
gir1.2-gstreamer-1.0	1.2.4-0ubuntu1
gstreamer-1.0-pulseaudio	
gstreamer-codec-install	
gstreamer-tools	0.10.36-1.2ubuntu3
gstreamer0.10-alsa:amd64	0.10.36-1.1ubuntu2
gstreamer0.10-audiosink	
gstreamer0.10-audiosource	
gstreamer0.10-ffmpeg	
gstreamer0.10-fluendo-mp3:amd64	0.10.23.debian-3
gstreamer0.10-gconf:amd64	0.10.31-3+nmu1ubuntu5
gstreamer0.10-lame	
gstreamer0.10-nice:amd64	0.1.4-1
gstreamer0.10-plugins-bad:amd64	0.10.23-7.2ubuntu1
gstreamer0.10-plugins-bad-multiverse	0.10.21-1ubuntu3
gstreamer0.10-plugins-base:amd64	0.10.36-1.1ubuntu2
gstreamer0.10-plugins-base-apps	0.10.36-1.1ubuntu2
gstreamer0.10-plugins-farsight	
gstreamer0.10-plugins-good:amd64	0.10.31-3+nmu1ubuntu5
gstreamer0.10-plugins-good-doc	
gstreamer0.10-plugins-really-bad	
gstreamer0.10-plugins-ugly:amd64	0.10.19-2ubuntu5
gstreamer0.10-pulseaudio:amd64	0.10.31-3+nmu1ubuntu5
gstreamer0.10-qapt	2.1.70-0ubuntu4.2
gstreamer0.10-schroedinger	
gstreamer0.10-tools	0.10.36-1.2ubuntu3
gstreamer0.10-videosink	
gstreamer0.10-videosource	
gstreamer0.10-visualization	
gstreamer0.10-x:amd64	0.10.36-1.1ubuntu2
gstreamer0.10-x264	
gstreamer0.10-xvid	
gstreamer0.8-tools	
gstreamer1.0-alsa:amd64	1.2.4-1~ubuntu1
gstreamer1.0-audiosink	
gstreamer1.0-audiosource	
gstreamer1.0-clutter	2.0.8-1build1
gstreamer1.0-ffmpeg	
gstreamer1.0-fluendo-mp3:amd64	0.10.23.debian-3
gstreamer1.0-gnomevfs	
gstreamer1.0-gnonlin	1.2.0-1
gstreamer1.0-lame	
gstreamer1.0-libav:amd64	1.2.4-1~ubuntu1
gstreamer1.0-libav-dbg:amd64	1.2.4-1~ubuntu1
gstreamer1.0-nice:amd64	0.1.4-1
gstreamer1.0-plugins-bad:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-bad-faad:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-bad-videoparsers:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-base:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-base-apps	1.2.4-1~ubuntu1
gstreamer1.0-plugins-base-dbg:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-good:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-good-dbg:amd64	1.2.4-1~ubuntu1
gstreamer1.0-plugins-really-bad	
gstreamer1.0-plugins-ugly:amd64	1.2.3-2build1
gstreamer1.0-pulseaudio:amd64	1.2.4-1~ubuntu1
gstreamer1.0-tools	1.2.4-0ubuntu1
gstreamer1.0-videosink	
gstreamer1.0-videosource	
gstreamer1.0-visualization	
gstreamer1.0-x:amd64	1.2.4-1~ubuntu1
libcanberra-gstreamer	
libgstreamer-plugins-bad0.10-0:amd64	0.10.23-7.2ubuntu1
libgstreamer-plugins-bad1.0-0:amd64	1.2.4-1~ubuntu1
libgstreamer-plugins-base0.10-0:amd64	0.10.36-1.1ubuntu2
libgstreamer-plugins-base0.10-0:i386	0.10.36-1.1ubuntu2
libgstreamer-plugins-base1.0-0:amd64	1.2.4-1~ubuntu1
libgstreamer-plugins-base1.0-0:i386	1.2.4-1~ubuntu1
libgstreamer-plugins-good1.0-0:amd64	1.2.4-1~ubuntu1
libgstreamer0.10-0:amd64	0.10.36-1.2ubuntu3
libgstreamer0.10-0:i386	0.10.36-1.2ubuntu3
libgstreamer1.0-0:amd64	1.2.4-0ubuntu1
libgstreamer1.0-0:i386	1.2.4-0ubuntu1
libgstreamer1.0-0-dbg:amd64	1.2.4-0ubuntu1
libreoffice-avmedia-backend-gstreamer	1:4.3.4-0ubuntu1~trusty1
phonon-backend-gstreamer:amd64	4:4.7.80-0ubuntu2~ubuntu14.04
phonon-backend-gstreamer-common:amd64	4:4.7.80-0ubuntu2~ubuntu14.04
phonon-backend-gstreamer1.0	4:4.7.80-0ubuntu2~ubuntu14.04
phonon4qt5-backend-gstreamer	
totem-gstreamer

dpkg-query --show *libav*
gstreamer1.0-libav:amd64	1.2.4-1~ubuntu1
gstreamer1.0-libav-dbg:amd64	1.2.4-1~ubuntu1
libav-dbg	7:1.2.6-1~trusty1
libav-extra-dbg	7:1.2.6-1~trusty1
libav-tools	7:1.2.6-1~trusty1
libavahi-client3:amd64	0.6.31-4ubuntu1
libavahi-client3:i386	0.6.31-4ubuntu1
libavahi-common-data:amd64	0.6.31-4ubuntu1
libavahi-common-data:i386	0.6.31-4ubuntu1
libavahi-common3:amd64	0.6.31-4ubuntu1
libavahi-common3:i386	0.6.31-4ubuntu1
libavahi-core7:amd64	0.6.31-4ubuntu1
libavahi-glib1:amd64	0.6.31-4ubuntu1
libavahi-gobject0:amd64	0.6.31-4ubuntu1
libavahi-ui-gtk3-0:amd64	0.6.31-4ubuntu1
libavalon-framework-java	
libavc1394-0:amd64	0.5.4-2
libavcodec-extra-52	
libavcodec-extra-53	
libavcodec-extra-54	
libavcodec52	
libavcodec53	
libavcodec54:amd64	7:1.2.6-1~trusty1
libavdevice-extra-53	
libavdevice53:amd64	7:1.2.6-1~trusty1
libavfilter-extra-3	
libavfilter3:amd64	7:1.2.6-1~trusty1
libavformat-extra-52	
libavformat-extra-53	
libavformat-extra-54	
libavformat52	
libavformat53	
libavformat54:amd64	7:1.2.6-1~trusty1
libavresample0	
libavresample1:amd64	7:1.2.6-1~trusty1
libavutil-extra-52	
libavutil52:amd64	7:1.2.6-1~trusty1

I seem to remember that gst-libav 1.2 did not work reliable with ffmpeg, that might be the problem here. We'll know once we tried your file :)

I've uploaded a WMV and a WMA file here: https://www.dropbox.com/sh/1us65f27xeft83t/AACDUV1HW_w1xK8ofKBIkuvza?dl=0

As I said, all of my WMA/WMV-files are causing the crash.

Works for me in 1.4 and git master.

So maybe I should stick to the libav in the ubuntu repositories and that should help?

I do not remeber the software that required the ffmpeg-stuff, but however, I'm going to try. :)

And did that help? We generally don't support running with arbitrary versions of ffmpeg or libav. Only the libav version that is included with the source release is officially supported.