#0  0xb73e978c in g_type_check_instance_cast ()
   from /usr/lib/libgobject-2.0.so.0
#1  0xb6372f86 in ?? () from /usr/lib/gtk-2.0/2.10.0/filesystems/libgio.so
#2  0x0834cd68 in ?? ()
#3  0x0836aa10 in ?? ()
#4  0x081325d8 in ?? ()
#5  0x01bdefdc in ?? ()
#6  0xb6372f69 in ?? () from /usr/lib/gtk-2.0/2.10.0/filesystems/libgio.so
#7  0xb73fd680 in ?? () from /usr/lib/libgobject-2.0.so.0
#8  0xbff25298 in ?? ()
#9  0xb73d8435 in g_cclosure_marshal_VOID__OBJECT ()
   from /usr/lib/libgobject-2.0.so.0
Backtrace stopped: frame did not save the PC