I've already submitted this to the collector, but I wanted to make sure that I'm not the only one with this problem. Using the CVS Zope, if I create a ZClass, I am unable to add a Property Sheet because of an error (missing "__len__"). I find it hard to believe that I'm the first person to try to add a ZClass in 2.2, but I didn't see this in the collector. Kevin http://www.byproducts.com - Humor and Novelties _______________________________________________ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )