I would try clearing the cache (and, potentially, restarting memcache if you're using it). The error is referring to things that don't exist in the code any more (namely 'Cardlib'). My guess is that the reference is cached somewhere, but if not perhaps you have a local module or a local modification that refers to it?

That was very quick Ethan. I do not have a local modification yet. Getting to know the code a little bit, when time allows it.

Solution: remove the wagn/tmp/cache direcotry (e.g. rm -R $HOME/web/wagn/tmp/cache) solved it.

I was thinking if something did not stay there. Anyways you can mark the ticket solved.