By the way, moving the offending code: > rids = context.QueryService(meta_type='ReservedCustomerNumberRange') > result = [context.Catalog.getobject(rid) for rid in rids] # Exception! from a Python Script to a class method fixes the problem for now. I'm moving to 2.7.4 now. -- Jean Jordaan http://www.upfrontsystems.co.za