Nigel Head writes:

.... I'll swear that a couple of weeks back, just after I got the Flash 5 upgrade I had this running with whatever version of Zope was extant then! Unfortunately I've been following along with the CVS checkouts without archiving them so I can't prove it. CVS supports checkout by date.

Thus, you can recreate the former state from the CVS repository, provided you know when you got the working version. Dieter