I removed backup folder, and re-ran as root(superuser), and I was able to successfully backup twice.
-- Backup fails with Unknown Error https://bugs.launchpad.net/bugs/416169 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs