Glancing at DpkgTerminalLog.txt, you are doing weird things that will kill your installation. Glad enough it does not let you do so, and push that 'false' error to alert you.
Take time to learn how to update/upgrade by reading the howto/kiwi from the community. https://help.ubuntu.com/community/Upgrades https://help.ubuntu.com/community/AptGet/Howto There is some graphical tool to do the stuff smoothly, like 'synaptic' sudo apt-get install synaptic sudo synaptic ** Changed in: sudo (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1498178 Title: package sudo 1.8.9p5-1ubuntu1.2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/1498178/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
