Comment 2 for bug 849225

StacktraceTop:
 show_configure_cb (widget=0x8911848, pm=0x8942b20) at peas-gtk-plugin-manager.c:229
 g_cclosure_marshal_VOID__VOID (closure=0x893f4e8, return_value=0x0, n_param_values=1, param_values=0x882b108, invocation_hint=0xbffa82a0, marshal_data=0x0) at /build/buildd/glib2.0-2.29.90/./gobject/gmarshal.c:85
 g_closure_invoke (closure=0x893f4e8, return_value=0x0, n_param_values=1, param_values=0x882b108, invocation_hint=0xbffa82a0) at /build/buildd/glib2.0-2.29.90/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=0x84c4268, detail=0, instance=0x8911848, emission_return=0x0, instance_and_params=0x882b108) at /build/buildd/glib2.0-2.29.90/./gobject/gsignal.c:3272
 g_signal_emit_valist (instance=0x8911848, signal_id=143, detail=0, var_args=0xbffa844c "\366\025\220") at /build/buildd/glib2.0-2.29.90/./gobject/gsignal.c:3003