Zope 2.7 prints the following warning during startup: lib/python/Interface/iclass.py:7: DeprecationWarning: The Interface.iclass module is no more. This is a stub module to allow ZClasses that subclass ObjectManager to continue to function - please fix your ZClasses (using the 'Subobjects' Yes, I have ZClasses from Zope 2.5.1. I cannot get rid of them yet. According to the CHANGES.txt file, I actually do not need to do anything yet - the stub should provide ZClass support for now. However the warning above says that I should fix my ZClasses using Subobjects. What precisely should I do in the Subobjects tab? -- Milos Prudek