Hi, trying to update a ZClass based Product to Zope 2.2.0 i get the following Error and Traceback: Error Type: ValueError Error Value: Invalid property value: wrapped object Traceback (innermost last): File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.2.0/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: ElementWithAttributes) File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.2.0/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: postit) File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: postit) File /usr/local/Zope-2.2.0/lib/python/OFS/DTMLMethod.py, line 167, in __call__ (Object: postit) File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: postit) File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval (Object: propertysheets.properties.manage_changeProperties(REQUEST)) (Info: REQUEST) File <string>, line 0, in ? File /usr/local/Zope-2.2.0/lib/python/OFS/PropertySheets.py, line 443, in manage_changeProperties (Object: Traversable) File /usr/local/Zope-2.2.0/lib/python/OFS/PropertySheets.py, line 255, in _updateProperty (Object: Traversable) File /usr/local/Zope-2.2.0/lib/python/OFS/PropertySheets.py, line 208, in _wrapperCheck (Object: Traversable) ValueError: (see above) The error occurs in a method i defined in a ZClass. The beginning of the method is: <dtml-var standard_html_header> <dtml-call "REQUEST.set('editor',AUTHENTICATED_USER)"> <dtml-call "REQUEST.set('edit_date', ZopeTime())"> <dtml-call "propertysheets.properties.manage_changeProperties(REQUEST)"> <dtml-call reindex_object> [...] The method is called from a edit form of a ZClass instance as the form action. Is there anything wrong with the method or is there something other to look at? Ciao, Jochen