[Zope-dev] ZODB Couldn't load state (Berkeley DB 2..7.7)

[Ping Lau]

I have been using Berkeley DB 2.7.7 as main Zope Storage for about 3 months
now.  I am running Zope 2.2.4.  Everything was fine yesterday.  This morning
I tried to access a ZClass (base class ZObjectManager), which contains about
2,000 objects, I got

ERROR(200) ZODB Couldn't load state for '\000\000\000\000\000\000\026\351'
Traceback (innermost last):
File /usr/local/zope/2-2/lib/python/ZODB/Connection.py, line 448, in
setstate cPickle.UnpicklingError: invalid load key, ''.

Other than this ZClass, I can access other objects just fine.  I tried Ty's
tranalyzer.  But it gave me "error: Not a .fs file (at least, not a kind I
know about)".

How can I recover the 2,000 objects?

Regards,
Ping