[Zope] upgrade 2.2.0 to 2.2.1b1

[Bak @ kedai]

hello all

has anybody encountered problems when upgrading from 2.2.0 to 2.2.1b1?  i 
have problems with some products (kmnetnews), and some of my ZClasses.  are 
there any known issues?  things i should have considered?


there are also tracebacks "Couldn't load state" when starting zope in debug 
mode..


platform
RH6.2, straight ZServer
products - KMnetnews, a few ZClasses, 

thanks

--traceback when i tried accessing kmnetnews--
 
        Zope Error

        Zope has encountered an error while publishing this resource. 

        TypeError

        Sorry, a Zope error occurred.

        Traceback (innermost last):
          File /home/kdie/Zope-2.2.1b1-src/lib/python/ZPublisher/Publish.py, 
line 222, in publish_module
          File /home/kdie/Zope-2.2.1b1-src/lib/python/ZPublisher/Publish.py, 
line 187, in publish
          File /home/kdie/Zope-2.2.1b1-src/lib/python/Zope/__init__.py, line 
221, in zpublisher_exception_hook
            (Object: Traversable)
          File /home/kdie/Zope-2.2.1b1-src/lib/python/ZPublisher/Publish.py, 
line 171, in publish
          File /home/kdie/Zope-2.2.1b1-src/lib/python/ZPublisher/mapply.py, 
line 160, in mapply
            (Object: index_html)
          File /home/kdie/Zope-2.2.1b1-src/lib/python/ZPublisher/Publish.py, 
line 112, in call_object
            (Object: index_html)
          File /home/kdie/Zope-2.2.1b1-src/lib/python/OFS/DTMLDocument.py, 
line 171, in __call__
            (Object: index_html)
          File 
/home/kdie/Zope-2.2.1b1-src/lib/python/DocumentTemplate/DT_String.py, line 
502, in __call__
            (Object: index_html)
          File 
/home/kdie/Zope-2.2.1b1-src/lib/python/DocumentTemplate/DT_With.py, line 146, 
in render
            (Object: Data)
          File 
/home/kdie/Zope-2.2.1b1-src/lib/python/DocumentTemplate/DT_Util.py, line 337, 
in eval
            (Object: index_html(_.None, _, category='top'))
            (Info: _)
          File <string>, line 0, in ?
        TypeError: call of non-function (type None)

----end tracebacks ----

--tracebacks starting zope--
------
2000-08-17T03:53:37 ERROR(200) ZODB Couldn't load state for 
'\000\000\000\000\000\000\000Z'
Traceback (innermost last):
  File /home/kdie/Zope-2.2.1b1-src/lib/python/ZODB/Connection.py, line 447, 
in setstate
  File /home/kdie/Zope-2.2.1b1-src/lib/python/ZODB/Connection.py, line 213, 
in _persistent_load
    (Info: 8÷)
  File /home/kdie/Zope-2.2.1b1-src/lib/python/ZODB/Connection.py, line 154, 
in __getitem__
---data snipped---