Why did I try this stupid trick ? I'm trying to figure out how to quickly "clone" a zclass - make changes to a working zclass to produce a variation zclass without all the tedium of creating the clone from scratch (sure, copying all the dtml etc but it's still tedious and error prone !). It occurred to me that I could use a text editor to change the various conflicting id's in the xml representation - if that works, I could write some code to do it automagically. Here's what I did. (zope 2.0.1 on an nt box at home) 1. Use export from the control panel in products to export a zclass as xml 2. cp the .xml from your var to import directories 3. Try importing it. 4. Of course I expect an import error because I'm stupidly trying to import objects like permissions and zclass names which already exist - so I expected various id conflicts - didn't seem to get that far. The error is in line 283 of ExportImport.py which reads pickler.dump(unpickler.load()) pickler.dump(unpickler.load()) (Yes, line 284 is a repeat of line 283 for some reason.) Anyone ? Traceback (innermost last): File D:\zope2\lib\python\ZPublisher\Publish.py, line 214, in publish_module File D:\zope2\lib\python\ZPublisher\Publish.py, line 179, in publish File D:\zope2\lib\python\Zope\__init__.py, line 201, in zpublisher_exception_hook (Object: ElementWithAttributes) File D:\zope2\lib\python\ZPublisher\Publish.py, line 165, in publish File D:\zope2\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_importObject) File D:\zope2\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: manage_importObject) File D:\zope2\lib\python\OFS\ObjectManager.py, line 475, in manage_importObject (Object: ElementWithAttributes) File D:\zope2\lib\python\ZODB\ExportImport.py, line 215, in importFile File D:\zope2\lib\python\ZODB\ExportImport.py, line 318, in importXML File D:\zope2\lib\python\ZODB\ExportImport.py, line 283, in importFile TypeError: (see above) -- Dr Ross Lazarus Associate Professor and Sub-Dean for Information Technology Faculty of Medicine, A27, R126a, University of Sydney, Camperdown, NSW 2006, Australia Tel: (+61 2) 93514429 Mobile: +61414872482 Fax: (+61 2) 93516646 Email: rossl@med.usyd.edu.au http://www.health.usyd.edu.au/people/rossl.htm