Attribute error in Zope Creating Mailman Folder?

Hello!

I basically had ZMailman working some days ago, but for various reasons have 
gone about reinstalling everything related to this.  I have

SunOS templeton 5.8 Generic_108528-13 sun4u sparc SUNW,Ultra-250
Python 2.1.2
Zope 2.5.0 (stable)
Mailman 2.1a4
ZMailman 2.1.0

When I try to create a Mailman folder in Zope, I get an Attribute error.  
Here is the traceback... There's probably an easy fix to this, as I've 
probably forgotten something.  I'd appreciate the help!  :-)


Error Type: AttributeError
 Error Value: mailman


Traceback (innermost last):
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/ZPublisher/Publish.py, 
line 150, in publish_module
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/ZPublisher/Publish.py, 
line 114, in publish
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/Zope/__init__.py, line 
158, in zpublisher_exception_hook
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/ZPublisher/Publish.py, 
line 98, in publish
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/ZPublisher/mapply.py, 
line 88, in mapply
    (Object: manage_addMailmanFolder)
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/ZPublisher/Publish.py, 
line 39, in call_object
    (Object: manage_addMailmanFolder)
  File 
/fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/Products/ZMailman/MailmanFolder.py, 
line 23, in manage_addMailmanFolder
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/OFS/ObjectManager.py, 
line 238, in _setObject
    (Object: testmm)
  File 
/fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/AccessControl/Owned.py, line 
217, in manage_fixupOwnershipAfterAdd
    (Object: mm)
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/OFS/ObjectManager.py, 
line 323, in objectValues
    (Object: mm)
  File /fs/tools/sparc.solaris-7/Zope-2.5.0/lib/python/OFS/ObjectManager.py, 
line 215, in _getOb
    (Object: mm)
AttributeError: (see above)

Thank you!
-- 
==Leonard E. Sitongia           
  Visualization and Enabling Technologies / Scientific Computing Division
  National Center for Atmospheric Research
  P.O. Box 3000 Boulder CO 80307  USA
  [email protected]    voice: (303)497-2454   fax: (303)497-1239