[Zope] oddities w/ products

I just installed Zope 2.1.4 have a number of products working. But there are several products that dont work. and I dont know enough abotu Zope and how to debug why things are acting the way they are. I installed Calendar and Fortune products - they both show up in Control_Panel/Products (not broken) but when I try to add them to a folder, I dont see them available. I am logged in as 'superuser'. I can add other random products and it works just fine. anyone? thanks ~alan