[Zope] Problem upgrading to Zope2.3

[Jay, Dylan]

I did a clean install (on w2k), then copied across my products and Data.fs
etc and when I restarted I got the following when I tried to access
manage_main on the root folder. Funny thing is this doesn't happen on any
other folder.



Error type: SystemError
Error value: Failed to import class Guard from module
Products.PythonMethod.zbytecodehacks.VSExec 



Traceback (innermost last):
  File D:\Zope\AUSLAB~1\lib\python\ZPublisher\Publish.py, line 222, in
publish_module
  File D:\Zope\AUSLAB~1\lib\python\ZPublisher\Publish.py, line 187, in
publish
  File D:\Zope\AUSLAB~1\lib\python\Zope\__init__.py, line 221, in
zpublisher_exception_hook
    (Object: ApplicationDefaultPermissions)
  File D:\Zope\AUSLAB~1\lib\python\ZPublisher\Publish.py, line 171, in
publish
  File D:\Zope\AUSLAB~1\lib\python\ZPublisher\mapply.py, line 160, in mapply
    (Object: manage_main)
  File D:\Zope\AUSLAB~1\lib\python\ZPublisher\Publish.py, line 112, in
call_object
    (Object: manage_main)
  File D:\Zope\AUSLAB~1\lib\python\Shared\DC\Scripts\Bindings.py, line 324,
in __call__
    (Object: manage_main)
  File D:\Zope\AUSLAB~1\lib\python\Shared\DC\Scripts\Bindings.py, line 353,
in _bindAndExec
    (Object: manage_main)
  File D:\Zope\AUSLAB~1\lib\python\App\special_dtml.py, line 236, in _exec
    (Object: manage_main)
  File D:\Zope\AUSLAB~1\lib\python\DocumentTemplate\DT_In.py, line 664, in
renderwob
    (Object: objectItems)
  File D:\Zope\AUSLAB~1\lib\python\DocumentTemplate\DT_In.py, line 759, in
sort_sequence
    (Object: objectItems)
  File D:\Zope\AUSLAB~1\lib\python\ZODB\Connection.py, line 496, in setstate
SystemError: (see above)