Thank you for the hint! I could solve some of my problems by following this article of the MS Knowledgebase: Error Message "Error Locating Object Handler" When Downloading a .pdf File (Q262213) But still I don't understand that ZOPE sometimes behaves in two differnt ways. Best Wishes Jürgen ______________________________________________________________________________ Die schönsten Ski-Regionen der Alpen - jetzt bei Ferienklick.de http://ferienklick.de/ski/?PP=2-5-100-105-38