Hello all,

I would like to ask you for help on tracking down a broken object and fixing 
it. I am developing a product with archgenxml-2.1 for Plone 3.1.4, CMF 2.1.1, 
Zope (Zope 2.10.6-final, python 2.4.4, linux2). I was just changing the 
parent class to be ATBTreeFolder and reinstalled the product. Then somehow 
creation of a new instance failed and I am stuck with a stale object, that 
shows in ZMI and won't get deleted but produces this error:

2008-12-08 19:23:26 ERROR Zope.SiteErrorLog http://somehost/some-object
Traceback (innermost last):
  Module ZPublisher.Publish, line 110, in publish
  Module ZPublisher.BaseRequest, line 424, in traverse
  Module Products.CMFCore.DynamicType, line 139, in 
__before_publishing_traverse__
  Module Products.CMFDynamicViewFTI.fti, line 221, in queryMethodID
  Module Products.CMFDynamicViewFTI.fti, line 188, in defaultView
  Module Products.CMFPlone.PloneTool, line 818, in browserDefault
  Module Products.CMFPlone.PloneTool, line 651, in getDefaultPage
  Module Products.CMFPlone.utils, line 104, in getDefaultPage
  Module plone.app.layout.navigation.defaultpage, line 66, in getDefaultPage
  Module Products.BTreeFolder2.BTreeFolder2, line 335, in has_key
AttributeError: 'NoneType' object has no attribute 'has_key'

What can I do?

Thanks for your help!

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