I recently made my first app with pygtk using Anjuta. It works well under Linux, so it’s time to share it with relatives and friends. I installed Python, pygtk and the Gtk all-in-one bundle (Cairo, pyGobject ect) on windows and tried to run it. I had an error saying self.builder.add_from_file(UI_FILE) Digging a bit in the code I found out that