[Zope] ZServer Question/Problem

Hello, I am using the newest ZServer under linux, together with Zope-1.10.2-linux2-x86, and it appears that I cannot correctly write to the ZServer. Whenever I publish something via netscape publish or even ftp, it creates a standard 'index-html' file of lentgh 144 bytes, independent from the original content. How can I make ftp or NS_Publishing running correctly? Thanks, Christian