This issue happens when you have a latest nux installed on your system and there is an api break (I think) as I have seen many other reports with the same type of error message in terminal especially people who were using nux from the unity daily ppa. I am closing this bug as invalid as this issue does not happen with the Vanilla unity setup.
** Changed in: unity Status: Incomplete => Invalid ** Changed in: unity (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/717626 Title: Unity 3.4.2 doesn't start -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs