[Zope] ExUserFolder + zope 2.5.1

[TrashMan]

I've updated my zope 2.4.4 to zope 2.5.1 
Now i've a big error on exuserfolder (vers. 10.8)
I can't do anything!! 
For example, if i would modify a properties i have an attribute error
with


Traceback (innermost last):
  File C:\sviluppo\zope251b\lib\python\ZPublisher\Publish.py, line 150,
in publish_module
  File C:\sviluppo\zope251b\lib\python\ZPublisher\Publish.py, line 114,
in publish
  File C:\sviluppo\zope251b\lib\python\Zope\__init__.py, line 159, in
zpublisher_exception_hook
    (Object: acl_users)
  File C:\sviluppo\zope251b\lib\python\ZPublisher\Publish.py, line 98,
in publish
  File C:\sviluppo\zope251b\lib\python\ZPublisher\mapply.py, line 88, in
mapply
    (Object: manage_editUser)
  File C:\sviluppo\zope251b\lib\python\ZPublisher\Publish.py, line 39,
in call_object
    (Object: manage_editUser)
  File
C:\sviluppo\zope251b\lib\python\Products\exUserFolder\exUserFolder.py,
line 494, in manage_editUser
    (Object: acl_users)
AttributeError: (see above)




Some suggestion??

Massi