(rhythmbox:1824): Rhythmbox-WARNING **: completion not emitted for encoder

(rhythmbox:1824): GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208596800 (LWP 1824)]
0x00950599 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
(gdb) bt
#0  0x00950599 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
#1  0x00950ba8 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#2  0x0095f687 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
#3  0x009607d2 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#4  0x00960b43 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#5  0x0809f163 in _rb_encoder_emit_completed (encoder=0x9574d98)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/backends/rb-encoder.c:128
#6  0x0809f34b in rb_encoder_gst_emit_completed (encoder=0x9574d98)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/backends/gstreamer/rb-encoder-gst.c:124
#7  0x0809f415 in rb_encoder_gst_finalize (object=0x9574d98)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/backends/gstreamer/rb-encoder-gst.c:100
#8  0x009531a5 in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#9  0x0808035b in completed_cb (encoder=0x9574d98, data=0x95cf6b0)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/shell/rb-removable-media-manager.c:876
#10 0x08080270 in do_transfer (manager=Variable "manager" is not available.
)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/shell/rb-removable-media-manager.c:919
#11 0x0808c85e in impl_paste (asource=0x946d4f8, entries=0x97d25c8)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/sources/rb-library-source.c:1766
#12 0x080875a9 in rb_source_paste (source=0x946d4f8, nodes=0x97d25c8)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/sources/rb-source.c:653
#13 0x08080576 in rb_removable_media_manager_cmd_copy_tracks (action=0x94a04a8, mgr=0x949ab18)
    at /home/alex/src/remote-cvs/gnome.org/rhythmbox/shell/rb-removable-media-manager.c:975
#14 0x0095c233 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#15 0x00950ba8 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#16 0x0095efa5 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
#17 0x009607d2 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#18 0x00960b43 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#19 0x05d84136 in gtk_action_create_menu_item () from /usr/lib/libgtk-x11-2.0.so.0
#20 0x05d845ec in gtk_action_activate () from /usr/lib/libgtk-x11-2.0.so.0
#21 0x0095c233 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#22 0x00950ba8 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#23 0x0095efa5 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
#24 0x009607d2 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#25 0x009633d0 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#26 0x05ee5ce4 in gtk_tool_button_get_type () from /usr/lib/libgtk-x11-2.0.so.0
#27 0x0095c233 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#28 0x00950ba8 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#29 0x0095efa5 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
#30 0x009607d2 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#31 0x00960b43 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#32 0x05d8fb9c in gtk_button_clicked () from /usr/lib/libgtk-x11-2.0.so.0
#33 0x05d91300 in gtk_button_get_alignment () from /usr/lib/libgtk-x11-2.0.so.0
#34 0x0095c233 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#35 0x00950575 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
#36 0x00950ba8 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#37 0x0095f281 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
#38 0x009607d2 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#39 0x00960b43 in g_signal_emit () from /usr