Does anyone have any experience running Zope on Centos 5. I have some Python scripts which just will not work. They work on Windows, Ubuntu, and SuSe but just don't do anything on Centos. I have tried various Zope 2.9.0 and 2.9.6-final, various psycopg connectors and Postgres 8.1 and 8.3. Here is an example script that works everywhere except Centos(excuse email formatting): request=context.REQUEST datefrom=request.datefrom dateto=request.dateto today = DateTime(datefrom) end = DateTime(dateto) auth=request.auth year=request.year while today <= end: for result in context.getstudentsbyyear(year=year): studentid=result.studentid if context.getday(today=today): #picks out non-weekend days only if context.checkholidays(today=today): #picks out holidays pass else: \\\\\\\\context.insertabsence(entered=today,auth=auth,studentid=studentid) today += 1 return "<b class=red>Absences entered</b>" Any ideas because I am getting very frustrated here. Regards Garry