Hi all, when trying to move from Zope 2.10 to 2.13, I ran into a problem. I successfully stripped versions out of my Data.fs (thanks to this mailing list). Now Zope starts up properly and displays the manage page, but when I try to access the various folders of the site, I get the error below. Any ideas about how to overcome this? Thanks, Frank Zope Error Zope has encountered an error while publishing this resource. *Error Type: TypeError* *Error Value: (', use Persistence.Persistent.__new__()', , ())* Traceback (innermost last): * Module ZPublisher.Publish, line 126, in publish * Module ZPublisher.mapply, line 77, in mapply * Module ZPublisher.Publish, line 46, in call_object * Module Shared.DC.Scripts.Bindings, line 322, in __call__ * Module Shared.DC.Scripts.Bindings, line 359, in _bindAndExec * Module App.special_dtml, line 185, in _exec * Module DocumentTemplate.DT_Let, line 77, in render * Module DocumentTemplate.DT_In, line 647, in renderwob * Module DocumentTemplate.DT_In, line 772, in sort_sequence * Module ZODB.Connection, line 860, in setstate * Module ZODB.Connection, line 914, in _setstate * Module ZODB.serialize, line 612, in setGhostState * Module ZODB.serialize, line 605, in getState * Module ZODB.broken, line 106, in __new__ TypeError: ('object.__new__(Args) is not safe, use Persistence.Persistent.__new__()', <class 'Shared.DC.ZRDB.Aqueduct.Args'>, ())