Zoptists, I had success running the downloaded source of Zope2.0.0a3, so I wanted the get the CVS checkout to stay up to date. The checkout process went fine, but when I try to run z2.py. I get this traceback(last line): Import Error:no module named ExtensionClass I checked the directories and indeed there is no module named ExtensionClass in there. Funny thing is that the Download 2.0.0.a3 doesn't have it inside /lib/python/ZODB either, but it worked fine. I am using Python 1.5.2 on Red Hat 5.2 i386. Any ideas? All my best -- Jason Spisak Masterson, Tate & Associates 6151 West Century Boulevard #928 Los Angeles, CA 90045 webmaster@mtear.com