[Zope] SunOS problems

Hello all I have downloaded the newly released Zope-1.10.3b1 and tried to install it on a SunOS 5.6 box (My first ever contact with a Sun machine!). I downloaded Python-1.5.2 as well. they both compiled successfully and Zope seems to start up ok. However whenever I try to access the Zope site I get: Unhandled exception in thread: Traceback (innermost last): File "/export/home/yifan/pavlos/Zope-1.10.3b1-src/ZServer/PubCore/ZServerPublisher.py", line 95, in __init__ response=response) TypeError: unexpected keyword argument: request I am using the latest release of ZServer and the accompanied patched ZPublisher. Any clues?? Pavlos