I have a ZClass based product on a Zope 2.0.1 site. I wanted to put this in an new Zope 2.1 site however I'm having problems. I've tried exporting the Product and then importing in into the Control_Panel of the new site. If its in xml format I get the following error <!-- Error type: TypeError Error value: ('not enough arguments; expected 2, got 1', <extension class ZClasses.Method.MW at 009E4330>, ()) --> <p><a href="http://www.zope.org/Credits"><img src="http://cornfed.auslabs.lucent.com/p_/ZopeButton" width="115" height="50" border="0" alt="Powered by Zope"></a></p> </BODY></HTML> <PRE> Traceback (innermost last): File D:\Program Files\Zope2\lib\python\ZPublisher\Publish.py, line 214, in publish_module File D:\Program Files\Zope2\lib\python\ZPublisher\Publish.py, line 179, in publish File D:\Program Files\Zope2\lib\python\Zope\__init__.py, line 201, in zpublisher_exception_hook (Object: ElementWithAttributes) File D:\Program Files\Zope2\lib\python\ZPublisher\Publish.py, line 165, in publish File D:\Program Files\Zope2\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_importObject) File D:\Program Files\Zope2\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: manage_importObject) File D:\PROGRA~1\Zope2\lib\python\OFS\ObjectManager.py, line 478, in manage_importObject (Object: ElementWithAttributes) File D:\Program Files\Zope2\lib\python\ZODB\ExportImport.py, line 216, in importFile File D:\Program Files\Zope2\lib\python\ZODB\ExportImport.py, line 318, in importXML File D:\Program Files\Zope2\lib\python\ZODB\ExportImport.py, line 283, in importFile TypeError: (see above) If its a zexp, I get an error saying that my ZClass does not support the copy operation. Is this 2.1 incompatibility problem or am I doing something wrong?