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

[Roger Beavans]

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 at beavans.org