StacktraceTop:
g_type_check_instance_cast (type_instance=0x239b550, iface_type=62537184) at /build/buildd/glib2.0-2.38.0/./gobject/gtype.c:4009
?? () from /tmp/apport_sandbox_WXcbgK/usr/lib/control-center-1/panels/libunity-appearance.so
g_simple_async_result_complete (simple=0x7f54bc012ee0) at /build/buildd/glib2.0-2.38.0/./gio/gsimpleasyncresult.c:777
complete_in_idle_cb_for_thread (_data=0x3e677e0) at /build/buildd/glib2.0-2.38.0/./gio/gsimpleasyncresult.c:845
g_main_dispatch (context=0x206e470) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3065
StacktraceTop: check_instance_ cast (type_instance= 0x239b550, iface_type= 62537184) at /build/ buildd/ glib2.0- 2.38.0/ ./gobject/ gtype.c: 4009 sandbox_ WXcbgK/ usr/lib/ control- center- 1/panels/ libunity- appearance. so async_result_ complete (simple= 0x7f54bc012ee0) at /build/ buildd/ glib2.0- 2.38.0/ ./gio/gsimpleas yncresult. c:777 in_idle_ cb_for_ thread (_data=0x3e677e0) at /build/ buildd/ glib2.0- 2.38.0/ ./gio/gsimpleas yncresult. c:845 buildd/ glib2.0- 2.38.0/ ./glib/ gmain.c: 3065
g_type_
?? () from /tmp/apport_
g_simple_
complete_
g_main_dispatch (context=0x206e470) at /build/