Can't remove or change Cardtype of Cardtype cards+example

Part

http://hooze.org/wagn/Restaurant

Strangely, was able to do it in sandbox.wagn.org and http://sandwagn.wagn.org/card/edit/fubar

Also, There are no foofoo cards, but you get a 500 error when you click on the type submenu under edit:

foofoo

On RCC, trying to edit some (only ones that there was an attempt to delete?):

http://2009rcc.org/wagn/Silence
http://2009rcc.org/wagn/time_slot

but not other:
http://2009rcc.org/wagn/Session
http://2009rcc.org/wagn/timeslot

...cardtypes returns a 500.