This is the problematic line: logging.error("Dist-upgrade failed: '%s'", e)
Maybe, the comma is causing the issue. ** Changed in: ubuntu-release-upgrader (Ubuntu) Milestone: None => trusty-updates -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310053 Title: 13.10 to 14.04 upgrade: UnicodeEncodeError: 'ascii' codec can't encode character u'\xab' in position 13: ordinal not in range(128) Logged from file DistUpgradeCache.py, line 661 in apt.log To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1310053/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs