Clarifying dobey's response. dobey represents Ubuntu (Canonical), but I do not, so I could be wrong.
Canonical does not always offer support if you have installed software using other than Ubuntu Software Center (or an equivalent, just as command line apt-get.) For example, if you are a 'developer' and download source code from a website and build and install it yourself. (Let's call that an unsupported install.) If Ubuntu Software Center does not start, it is likely you have unsupported installed for example: python, zope, sip, PyQt, or other. Ubuntu Software Center is an app written in Python that seems to depend on the example modules. In other words, you have stepped into dependency hell. One strategy for a fix is: undo whatever you unsupported installed last, and reinstall using supported channels . Another strategy is: upgrade your Ubuntu version. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1085425 Title: Crash in software-center when starting service com.ubuntu.sso To manage notifications about this bug go to: https://bugs.launchpad.net/software-center/+bug/1085425/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs