I love the drunk programmer's error message: "Unknown package installed."
Did he expect to know every program/package in existence and is checking your installation for non-existing (alien) programs/packages?
It looks like some kind of scripting error like calling python or perl or something and that's giving you the error.
Maybe mixing up of python/perl package versions that makes some bad meta and gives this error!?
Try editing the file and check line 22.. what is it calling? Try reproducing it/check what it is trying to do.
Did he expect to know every program/package in existence and is checking your installation for non-existing (alien) programs/packages?
It looks like some kind of scripting error like calling python or perl or something and that's giving you the error.
Maybe mixing up of python/perl package versions that makes some bad meta and gives this error!?
Try editing the file and check line 22.. what is it calling? Try reproducing it/check what it is trying to do.