[Zope-dev] WEBDav - ZClass Problems

I have two ZClasses, one with base class of CatalogAwareBase and ZDTMLDocument, the other with base class of _ZClass_for_Renderable and CatalogAwareBase. Manager role has the full set of permissions for the classes. ZInstances are created as expected, TTW. However, when I try to manage these ZInstances via a WEBDav client, the WEBDav Server simply doesn't show that the objects are there. Is the WebDav server setup to ONLY manage DTMLDocuments and DTMLMethods? I have had no problems with my WEBDav client when managing these traditional Zope objects. Is this a side effect of ZClasses or of CatalogAware? As a side, the FTP client has no problems with these ZInstances. What gives??? Eric