[Zope] xen?

[Guy Robinson]

I am a zope newbie and I have downloaded Xen to try. I realise it is no
longer being developed but has anyone got it to work with Zope2.2.4?
Whatever I try and open it gives me the following error message:

AttributeError

Sorry, a Zope error occurred.

Traceback (innermost last):
  File /usr/local/Zope224/lib/python/ZPublisher/Publish.py, line 222, in
publish_module
  File /usr/local/Zope224/lib/python/ZPublisher/Publish.py, line 187, in
publish
  File /usr/local/Zope224/lib/python/Zope/__init__.py, line 221, in
zpublisher_exception_hook
    (Object: Traversable)
  File /usr/local/Zope224/lib/python/ZPublisher/Publish.py, line 162, in
publish
  File /usr/local/Zope224/lib/python/ZPublisher/BaseRequest.py, line 442, in
traverse
  File
/usr/local/Zope224/lib/python/Products/XUserFolder/GenericUserFolder.py,
line 457, in validate
    (Object: Traversable)
  File
/usr/local/Zope224/lib/python/Products/XUserFolder/GenericUserFolder.py,
line 408, in _cookie_validate
    (Object: Traversable)
  File
/usr/local/Zope224/lib/python/Products/XUserFolder/GenericUserFolder.py,
line 258, in _recurse_validate
    (Object: Traversable)
AttributeError: 'None' object has no attribute 'authenticate'



Any ideas?

Guy