Edit to previous comment:
And if I understand correctly from https://bugzilla.gnome.org/show_bug.cgi?id=709183, this is importing gtk+2 modules via 'import gtk' as well as gtk+3 modules via 'import gi' **which causes module conflicts**.
Edit to previous comment:
And if I understand correctly from https:/ /bugzilla. gnome.org/ show_bug. cgi?id= 709183, this is importing gtk+2 modules via 'import gtk' as well as gtk+3 modules via 'import gi' **which causes module conflicts**.