I tried upgrading today using the apt-clone file provided in your bug report and did not run into any issues. Have you already upgraded to 16.04? If not could you try again? Thanks!
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1530510 Title: don't accept upgrade because some packages is crashed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1530510/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs