I had exactly the same problem and solved it by reinstalling all dependencies for software-properties-gtk package: python, python- central, synaptic, gksu, python-software-properties, python-glade2, python-gtk2, update-manager and software-properties-gtk itself. Everything is well now!
-- ImportError: No module named gtk.SoftwarePropertiesGtk https://bugs.launchpad.net/bugs/361180 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
