(python:6006): Gtk-CRITICAL **: IA__gtk_widget_set_parent: assertion `GTK_IS_WIDGET (parent)' failed (python:6006): Gtk-CRITICAL **: IA__gtk_widget_get_direction: assertion `GTK_IS_WIDGET (widget)' failed Command terminated I'm not sure how to approach this at all. I'm building a front end GUI in wxPython which has been running fine before today. I would post my source code, but it's large and I have no idea where the problem is. If I could get an idea of what this problem means I might be able to find the relevant source. Thanks in advance!