#0  0x00002b3ed2ef1e0c in g_type_check_instance_cast ()
   from /usr/lib/libgobject-2.0.so.0
#1  0x0000000000464657 in ?? ()
#2  0x00002b3ed313f70b in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00002b3ed313efd3 in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#4  0x00002b3ed31422dd in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00002b3ed31425ea in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#6  0x00002b3ed1b92883 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#7  0x0000000000472e64 in main ()