[Zope] stop_syn attribute error with zope 2.2.0a1

[Oliver Frommel]

hi,

after getting around the "superuser cannot own .." problem by creating a new
user and importing parts of the old site, now I am getting the following error:

Error Type: AttributeError
Error Value: stop_syn

Traceback (innermost last):
  File /home/oliver/Zope-2.2.0a1-src/lib/python/ZPublisher/Publish.py, line 224, in publish_module
  File /home/oliver/Zope-2.2.0a1-src/lib/python/ZPublisher/Publish.py, line 189, in publish
  File /home/oliver/Zope-2.2.0a1-src/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook
    (Object: ApplicationDefaultPermissions)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/ZPublisher/Publish.py, line 175, in publish
  File /home/oliver/Zope-2.2.0a1-src/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_importObject)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/ZPublisher/Publish.py, line 112, in call_object
    (Object: manage_importObject)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/OFS/ObjectManager.py, line 518, in manage_importObject
    (Object: ApplicationDefaultPermissions)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/OFS/ObjectManager.py, line 248, in _setObject
    (Object: ApplicationDefaultPermissions)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/OFS/ObjectManager.py, line 264, in manage_afterAdd
    (Object: ElementWithAttributes)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/OFS/ObjectManager.py, line 264, in manage_afterAdd
    (Object: ElementWithAttributes)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/OFS/ObjectManager.py, line 264, in manage_afterAdd
    (Object: ElementWithAttributes)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/Products/ZDBase/ZDiscussions.py, line 174, in manage_afterAdd
    (Object: 957744405)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/Products/ZCatalog/ZCatalog.py, line 369, in catalog_object
    (Object: ElementWithAttributes)
  File /home/oliver/Zope-2.2.0a1-src/lib/python/Products/ZCatalog/Catalog.py, line 373, in catalogObject
  File /home/oliver/Zope-2.2.0a1-src/lib/python/SearchIndex/UnTextIndex.py, line 251, in index_object
  File /home/oliver/Zope-2.2.0a1-src/lib/python/SearchIndex/Lexicon.py, line 165, in Splitter
AttributeError: (see above)

any hints on fixing that?
thanks
--Oliver