[Zope] Can't pack database

[Itai Tavor]

Hi,

I get this error when I try to pack the database (Zope 2.0.0):
Error Type: KeyError
Error Value:

Traceback (innermost last):
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZPublisher/Publish.py, 
line 214, in publish_module
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZPublisher/Publish.py, 
line 179, in publish
   File /usr/Zope-2.0.0-linux2-x86/lib/python/Zope/__init__.py, line 
201, in zpublisher_exception_hook
     (Object: Fake)
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZPublisher/Publish.py, 
line 165, in publish
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZPublisher/mapply.py, 
line 160, in mapply
     (Object: manage_pack)
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZPublisher/Publish.py, 
line 102, in call_object
     (Object: manage_pack)
   File 
/usr/Zope-2.0.0-linux2-x86/lib/python/App/ApplicationManager.py, line 
337, in manage_pack
     (Object: ElementWithAttributes)
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZODB/DB.py, line 514, in pack
   File /usr/Zope-2.0.0-linux2-x86/lib/python/ZODB/FileStorage.py, 
line 980, in pack
     (Object: /usr/Zope/var/Data.fs)
KeyError: (see above)

I didn't do anything wrong. I've been nice to people, mostly. Why do 
I deserve this?
--
Itai Tavor                      -- "Je sautille, donc je suis."    --
itavor@vic.bigpond.net.au       --               - Kermit the Frog --
-- 'Supposing a tree fell down, Pooh, when we were underneath it?' --
-- 'Supposing it didn't,' said Pooh after careful thought.         --