First comment out all the sources in the list. When done it should look like the attached file i have added. All the sources should have a # before them.
** Attachment added: "Example source list" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/695441/+attachment/1782089/+files/Example -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/695441 Title: Dist upgrade fails (offline, alternate-cd, cdromupgrade) -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
