[Zope] Install Problem

When I tried to install Zope 2.5.1 I received a "SystemError: 256" message and the install process halted. It started with "compiling extensions in lib/python" and then started a traceback through the code. Basically it said that it could not find the file "Makefile.pre.in". I have searched the files but can't find anything on this specific error. Do you have any suggestions on how to install or correct the error. I am using Python 2.2.1. Rick Lacharite rllacharite@shaw.ca