Hi Dieter, hi other fellow Zopists, sorry for sending HTML formatted Emails and that BCC thing... Thanks for your help! I would really be interested in that hotfix solution, but I have not yet understood, if my following code would do what you meant with: "You would need to merge the Application's __bobo_traverse__ with that of MFolder". --- snip ---- from OFS.Application import Application from Products.MFolder import MFolder Application.__bobo_traverse__ = MFolder.__bobo_traverse__ --- snip ---- Or would I have to define a new __bobo_traverse__ (i.e. "merge" both of them - how?) and assign that new one to Application.__bobo_traverse__ ? It would be very nice if you could still provide me with further information/implementation despite me being rude with BCC. Another "problem" I'm currently having with MFolder I have described in the mailing list at http://groups.yahoo.com/group/zope/message/67633 http://groups.yahoo.com/group/zope/message/67642 which concern index_html difficulties. It would be great if you could look into this one as well. Thanks in advance, Philipp Robbel