[Zope] GUM error

[Olaf Marc Zanger]

hi there,

i installed GUM for testing.
starting zope brings no errors up

when i want to add a GUM Instance and let all defaults (morten, ...)
i get this error message.

Remarks for Errortracking

(Please pass this information to your support) 

    Error Type: Bad Request 
    Error Value: The id "Mail" is invalid--it is already in use. 
    Error URL: 
http://sino:8090/ipMessenger/manage_addProduct/GUM/manage_add_gum 
    Error Message: 
    Error Absolute URL: http://sino:8090/ipMessenger 

    The URL may be incorrect. 
    The parameters passed to this resource may be incorrect. 
    A resource that this resource relies on may be encountering an error. 

Traceback (innermost last):
  File /home/soli-con/ipOffice/lib/python/ZPublisher/Publish.py, line 222, in 
publish_module
  File /home/soli-con/ipOffice/lib/python/ZPublisher/Publish.py, line 187, in 
publish
  File /home/soli-con/ipOffice/lib/python/Zope/__init__.py, line 221, in 
zpublisher_exception_hook
  File /home/soli-con/ipOffice/lib/python/ZPublisher/Publish.py, line 171, in 
publish
  File /home/soli-con/ipOffice/lib/python/ZPublisher/mapply.py, line 160, in 
mapply
    (Object: manage_add_gum)
  File /home/soli-con/ipOffice/lib/python/ZPublisher/Publish.py, line 112, in 
call_object
    (Object: manage_add_gum)
  File /home/soli-con/ipOffice/lib/python/Products/GUM/gum.py, line 75, in 
manage_add_gum
  File /home/soli-con/ipOffice/lib/python/OFS/ObjectManager.py, line 270, in 
_setObject
    (Object: Traversable)
  File /home/soli-con/ipOffice/lib/python/OFS/ObjectManager.py, line 145, in 
checkValidId
    (Object: Traversable)
Bad Request: (see above)
-- 
soli-con Engineering Zanger, Dipl.-Ing. (FH) Olaf Marc Zanger
Lorrainestrasse 23, 3013 Bern / Switzerland
fon:+41-31-332 9782, mob:+41-76-572 9782
mailto:olaf.zanger@soli-con.com, http://www.soli-con.com