I am having the same issue, however it does not happen al the time. It seems this only happens when update manager checks for updates automatically. After a reboot I can start it and it will open but not when it has checked for updates.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/965422 Title: Update Manager window does not appear when clicking button on Unity launcher bar To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/965422/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
