I had to add the following to TinyTablePlus to make it show in the add products menu on the ZCM screen. I.e. the product installed ok and showed up in the products fine(and not borken) but I could not find a add item for it in the management screens. My first thought was that zope didn't really know that it was there to add ... so I added the following and it worked. It may not be the right thing, but it worked. I am using Zope 2.4.0a1 def initialize(context): """initialize tinytable product""" context.registerClass( TinyTablePlus.TinyTablePlus, constructors = ( TinyTablePlus.addItemForm, TinyTablePlus.addItem, ) ) regards Matt