That happens when there is a manually installed lib in "site-packages" folder.
I think this is a duplicate of : https://bugs.launchpad.net/ubuntu/+source/python2.6/+bug/472254 -- "old-site-packages" directory wasn't created! Package python2.6-minimal_2.6.4-0ubuntu3_i386 failed to install/upgrade: subprocess post-installation script returned error exit status 1 https://bugs.launchpad.net/bugs/497580 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