Comment 2 for bug 877570

StacktraceTop:
 g_type_instance_get_private (instance=0x4e9da786, private_type=39106720) at /build/buildd/glib2.0-2.28.6/./gobject/gtype.c:4503
 brasero_app_unique_message (uapp=<optimized out>, command=-1, message_data=<optimized out>, app=0x4e9da786) at brasero-app.c:2015
 unique_marshal_ENUM__INT_BOXED_UINT (closure=0x25e56f0, return_value=0x7fff3dac4720, n_param_values=<optimized out>, param_values=0x23f9060, invocation_hint=<optimized out>, marshal_data=<optimized out>) at uniquemarshal.c:85
 g_closure_invoke (closure=0x25e56f0, return_value=0x7fff3dac4720, n_param_values=4, param_values=0x23f9060, invocation_hint=0x7fff3dac46e0) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x23fcb70, emission_return=0x7fff3dac4890, instance_and_params=0x23f9060) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3252