I'm also on 14.05 and this is definitely looking like a bug, I've had this happen multiple times now on packages I know are good.
I can easily skirt around the issue by using "sudo dpkg -i package.deb" but the USC should not be failing like this. Removing GDM and moving to USC. ** Package changed: gdm (Ubuntu) => software-center (Ubuntu) ** Changed in: software-center (Ubuntu) Status: Invalid => New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1290228 Title: "Ubuntu Software Center" reports "Package operation Failed" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1290228/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs