Moving this from a downstream bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=1008078

Description of problem:
the hang occured while sending an email from my gmail-account (not included via online-accounts, but manually). klicking send left evolution in freezed state. closing the window did not raise the "does not seem to respond"-dialog but causes evolution to crash (as what this is the crashreport for). the email i tried to send was in "sent" folder but i have reasonable doubt that my email was not sent. 

* gnome-session was restarted before

Version-Release number of selected component:
evolution-3.8.5-2.fc19

Additional info:
reporter:       libreport-2.1.6
backtrace_rating: 4
cmdline:        evolution
crash_function: g_type_check_instance_cast
executable:     /usr/bin/evolution
kernel:         3.10.11-200.fc19.x86_64

Sep 14 13:27:55 moe kernel: [35268.965279] evolution[17337]: segfault at 2 ip 000000328a630fd0 sp 00007fff9a06beb0 error 4 in libgobject-2.0.so.0.3600.3[328a600000+4d000]
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): GLib-GObject-WARNING **: invalid uninstantiatable type `-g-type-private--GTypeFlags' in cast to `GtkWidget'
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): Gtk-CRITICAL **: gtk_widget_has_grab: assertion `GTK_IS_WIDGET (widget)' failed
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): GLib-GObject-WARNING **: invalid uninstantiatable type `-g-type-private--GTypeFlags' in cast to `GtkWidget'
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): Gtk-CRITICAL **: gtk_widget_get_window: assertion `GTK_IS_WIDGET (widget)' failed
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): Gdk-CRITICAL **: gdk_device_grab: assertion `GDK_IS_WINDOW (window)' failed
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): Gdk-CRITICAL **: gdk_device_grab: assertion `GDK_IS_WINDOW (window)' failed
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): GLib-GObject-WARNING **: invalid cast from `EAttachmentIconView' to `ENameSelectorEntry'
Sep 14 13:27:55 moe gnome-session[16553]: (evolution:17337): libeutil-CRITICAL **: e_name_selector_entry_peek_destination_store: assertion `E_IS_NAME_SELECTOR_ENTRY (name_selector_entry)' failed
Sep 14 13:27:56 moe abrt[18019]: Saved core dump of pid 17337 (/usr/bin/evolution) to /var/tmp/abrt/ccpp-2013-09-14-13:27:55-17337 (250761216 bytes)

Core was generated by `evolution'.
Program terminated with signal 11, Segmentation fault.

+ Trace 232487