It'd be helpful were you to add the log file /var/log/dist- upgrade/main.log to the bug report. Just removing the sources files in /etc/apt/sources.list.d/ is not enough, you may need to revert back to the official version of the ubuntu package for the upgrade to complete. You can do that with the tool 'ppa-purge', however you'll need to readd the PPAs you removed so the tool can determine which packages came from PPAs. Good luck!
** Changed in: ubuntu-release-upgrader (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/1256074 Title: Cannot upgrade to Ubuntu 13.10 from 13.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1256074/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs