Hi Martin, In VarLogDistupgradeMainlog.txt
you have a woanderfull stacktrace: Traceback (most recent call last): File "/tmp/ubuntu-release-upgrader-406zz2/raring", line 10, in <module> sys.exit(main()) File "/tmp/ubuntu-release-upgrader-406zz2/DistUpgrade/DistUpgradeMain.py", line 240, in main if app.run(): File "/tmp/ubuntu-release-upgrader-406zz2/DistUpgrade/DistUpgradeController.py", line 1769, in run return self.fullUpgrade() File "/tmp/ubuntu-release-upgrader-406zz2/DistUpgrade/DistUpgradeController.py", line 1668, in fullUpgrade if not self.updateSourcesList(): File "/tmp/ubuntu-release-upgrader-406zz2/DistUpgrade/DistUpgradeController.py", line 818, in updateSourcesList _("Some third party entries in your sources.list " File "/tmp/ubuntu-release-upgrader-406zz2/DistUpgrade/DistUpgradeViewText.py", line 138, in information sys.stdin.readline().decode(ENCODING, "backslashreplace") TypeError: decode() argument 1 must be string, not None ** Tags added: quantal2raring -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1106081 Title: TypeError from do-release-upgrade when LANG=C To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1106081/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs