[Zope] Zope on HP-UX 11.11, startup error

I have the following problem. HP-UX 11.11, python 2.1.3. I'm trying to start zope with the ./start -u zope, command. the user "zope" has rights to the var directory. 2003-08-28T16:10:22 PANIC(300) z2 Startup exception Traceback (innermost last): File /usr2/usr/local/zope/z2.py, line 748, in ? File /usr2/usr/local/zope/ZServer/PCGIServer.py, line 255, in __init__ TypeError: open() argument 1 must be string, not None any help appreciated, thanks, roger@beavans.org