RE: [Zope] ZClasses under Zope 2.5

I am new to Zope and I am trying to create a ZClass in order to use automatic cataloging. I am following the Zope book chapter 9 automatic cataloging. The creation of the ZClas "NewsItem" works fine, as described in the book under Zope 2.4.3 (running on NT 4). Unfortunately the same ZClass does not work under Zope 2.5.0 (Windows 2000). If I want to create a new NewsItem I get an error after having entered an id and clicked on add.

Any one any suggestion?

I suggest you tell us what the error text is, and post the traceback.