[Zope] ZDiscussions in Zope 2.4.0

What is the right way to add a ZDiscussion in Zope 2.4.0? When I add it, it tells me: Error Type: TypeError Error Value: Catalog addIndex now requires the index type to be resolved prior to adding; create the proper index in the caller. What is "the caller" and what is "the proper index"? _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp