It seems that you were running the update-manager together with another package manager already open (synaptic, or apt-get). Only one can run at any specific time. So I would ask if you close all possible package managers (if not sure, if you reboot) and then run the update-manager again.
I am going to set the status as incomplete. Please feel free to reopen it if the bug is still present with all package manager close. Thanks. ** Changed in: ubuntu Status: New => Incomplete -- Update Manager Error https://bugs.launchpad.net/bugs/416923 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs