[Zope] Zope wont write to anything?

hey, ive got zope running but when i try to start it up i get: Traceback (innermost last): File /root/Zope-2.3.1-src/z2.y, line 755, in ? IOError: [Errno 13] Permission denied: `/root/Zope-2.3.1-src/var/Z2.pid' it starts up fine in read only mode, but when i try to access things using worldpilot, i get the same crap but for worldpilots files. all the directories are writable, and i can touch and write to the files it mentions from bash. could sombody *please* tell me what is going on here? -Joey D'Anna