This occured on my machine and I installed via USB. I used the Delete Ubuntu 11.10 and install Ubuntu 12.04 ~ish option. It is repeatable when I attempt to install Guake from the software center. Other packages have installed fine before and after. Guake repeatedly fails.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/751725 Title: software-center crashed with AptDaemonError in _medium_required(): org.debian.apt: Could not cancel transaction To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/751725/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs