In my case, the system is a running Dapper 6.06 system. The error seemed to happen after running the 'envy' script to update to the latest nvidia drivers.
Don -- dpkg - process_queue: Assertion 'dependtry <=4' failed. error https://launchpad.net/bugs/55641 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs