you are using a local installation of virtualenv which appears to be incompatible with the files installed by the distribution virtualenf
File "/usr/*local*/bin/virtualenv", line 5, in try the distribution version: /usr/bin/virtualenv ** Changed in: python-virtualenv (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/806527 Title: virtualenv 1.4.9 installed in 11.04 broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-virtualenv/+bug/806527/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs