[Zope] help with ZClasses

[Jason Jones]

I upgraded to Zope2.0b5, added a product and then attempted to add a ZClass to
that product, but I get the error shown below. I went back to beta 3 and did
the same thing with success. Both Zope's were compiled from source in the same
way. Has something happened to ZClasses? I can add anything else to a new
product fine, just not a ZClass.

Thanks in advance for any help,

Jason Jones
jason_j@countermedia.org

 Traceback (innermost last):
  File /web/zope2b5/lib/python/ZPublisher/Publish.py, line 209, in publish_module
  File /web/zope2b5/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /web/zope2b5/lib/python/Zope/__init__.py, line 199, in zpublisher_exception_hook
    (Object: ElementWithAttributes)
  File /web/zope2b5/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /web/zope2b5/lib/python/ZPublisher/mapply.py, line 154, in mapply
    (Object: manage_addZClassForm)
  File /web/zope2b5/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: manage_addZClassForm)
  File /web/zope2b5/lib/python/App/special_dtml.py, line 120, in __call__
    (Object: manage_addZClassForm)
    (Info: /web/zope2b5/lib/python/ZClasses/addZClass.dtml)
  File /web/zope2b5/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__
    (Object: manage_addZClassForm)
  File /web/zope2b5/lib/python/DocumentTemplate/DT_With.py, line 148, in render
    (Object: _(selected=[], unselected=[], baseclasses=[], id='', title='',
             meta_type='',
             all=manage_subclassableClassNames(),
             ))
  File /web/zope2b5/lib/python/DocumentTemplate/DT_With.py, line 148, in render
    (Object: REQUEST)
  File /web/zope2b5/lib/python/DocumentTemplate/DT_With.py, line 148, in render
    (Object: _(
    selected=_.reorder(
       all,
       with   = baseclasses+
                (REQUEST.get('manage_addZClassForm','')=='    -> '
                 and unselected or []),
       without= (REQUEST.get('manage_addZClassForm','')==' <-    ' 
                 and   selected or [])
       ),
    ))
  File /web/zope2b5/lib/python/DocumentTemplate/DT_With.py, line 148, in render
    (Object: _(unselected=_.reorder(all, without=selected)))
  File /web/zope2b5/lib/python/DocumentTemplate/DT_In.py, line 689, in renderwob
    (Object: unselected)
TypeError: (see above)