[Zope] Corrupt database after packing with Zope 2.6.2

Hi, After our nightly pack of the Data.fs, the site complains about POSKeyErrors (a good old error) rendering the site unusable (can't load/save objects). Stopping the site, and running fsrecover.py on it, it says 'removed 0 bytes', but the resulting Data.fs cannot be used; when starting Zope again it just says: Problems importing module: rest Problems importing module: rest and exits. Any takers? Regards, -- Bjorn