Debugging products is a pain... restarting Zope all the time is a Pain.... THANK GOD for Shane Hathaway. ;-) I am delighted to report general success with the Refresh product! My only problem is while debugging the process of creating new EMarket instances, I find that every time I run 'Refresh' I get a new "EMarket" in the 'Available Objects' popup. A quick test of other Products shows the same behavior. Soo... I snooped through the product creation code and found that Products.meta_types was being unconditionally appended to every time context.registerClass was called.... so I changed my initialize to this: def initialize(context): import Products context.registerClass( EMarket.EMarket, permission='Add EMarkets', constructors=(EMarket.addEMarketForm, EMarket.addEMarket), icon='emarket.gif', ) found_count = 0 new_products_meta_types = [] for index in range(len(Products.meta_types)): if Products.meta_types[index]['name'] == EMarket.EMarket.meta_type: found_count = found_count + 1 if found_count == 1: new_products_meta_types.append( Products.meta_types[index] ) else: new_products_meta_types.append( Products.meta_types[index] ) Products.meta_types = tuple( new_products_meta_types) In other words... only include the original version of EMarket.EMarket.meta_type in the Product.meta_types tuple... if there are others... leave them out. ...and that seems to have solved the problem.... Does this seem like an OK idea? thanks, -steve