Metapackages it was for me too: After removing ubuntu-mate-core and ubuntu-desktop the upgrade process finally ran. Thanks for the info.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1510841 Title: "Could not calculate the upgrade" due to multiple metapackages being installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1510841/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
