This is because of packages you've installed from the xorg-edgers PPA. The web page for their PPA contains details regarding how to uninstall their versions of packages and install Ubuntu's.
** Tags added: ppa -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1232996 Title: do-release-upgrade -d fails when upgrading 13.04 to 13.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1232996/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
