[Zope] Access to Data.fs without Zope ?

Hello, Last summer I wrote an application to inventarise all my media (books, CD's, periodicals, etc) which worked well, but wasn't yet complete. Anyway, I started adding books as an exercise to see how it could be improved. However, I run Debian testing, and after some updates in the fall I could not get access anymore to my data. Today I tried to move the contents of Zope default to a known running instance of Zope, but the moment I do that, the Zope instance cannot be started anymore. Replace the contents back by its originals and the instance can be started once again. So, is there a way to access the contents of the Data.fs file without using Zope alltogether, so that I at least can start working again ? Regards, Jurgen