Version-Release number of selected component:
mate-file-manager-1.6.3-1.fc20

Additional info:
reporter:       libreport-2.1.11
backtrace_rating: 4
cmdline:        caja -n
crash_function: gtk_widget_get_toplevel
executable:     /usr/bin/caja
kernel:         3.12.7-300.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 gtk_widget_get_toplevel at gtkwidget.c:8243
 #1 gtk_widget_is_focus at gtkwidget.c:5606
 #2 gtk_widget_propagate_state at gtkwidget.c:9303
 #3 gtk_widget_set_sensitive at gtkwidget.c:6352
 #4 gtk_tool_button_update at gtktoolbutton.c:821
 #10 g_object_notify_by_spec_internal at gobject.c:1141
 #11 g_object_notify at gobject.c:1183
 #12 gtk_action_set_sensitive at gtkaction.c:1148
 #13 caja_navigation_window_allow_back at caja-navigation-window.c:734
 #14 caja_navigation_window_init at caja-navigation-window.c:202