This is due to the php5 ppa you have enabled which provides package version numbers for utopic greater than those that exist for vivid, so the release upgrader doesn't know how to proceed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448520 Title: Hung on details for outdated installs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1448520/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
