i updated my system and now the error doesn't come again… so if you have this problem, simply try to update
-- software-center crashed with ImportError in getEffectiveLevel() https://bugs.launchpad.net/bugs/508436 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