[Zope] Newbie Problems with publish.py and objects

[malkum x-tc]

hey everybody, im new to zope, been trying to figure it out for about a week
now.. and i keep getting this same error:

Traceback (innermost last):
  File /usr/local/bin/Zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module
  File /usr/local/bin/Zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /usr/local/bin/Zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook
    (Object: ApplicationDefaultPermissions)
  File /usr/local/bin/Zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /usr/local/bin/Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_addetcUserFolder)
  File /usr/local/bin/Zope/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: manage_addetcUserFolder)
  File /usr/local/bin/Zope/lib/python/Products/etcUserFolder/etcUserFolder.py, line 419, in manage_addetcUserFolder
    (Object: ApplicationDefaultPermissions)
  File /usr/local/bin/Zope/lib/python/ZPublisher/HTTPRequest.py, line 760, in __getitem__
KeyError: (see above)

everytime i try and add a new object. could somebody enlighten me as to what
all this means and how i can figure out to to diagnose problems within zope ?

oh and is there any decent documentation out there anywhere on zope ?
 
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