Stephen Harrison writes:

Error Type: SystemError Error Value: Failed to import class ImplicitAcquirerWrapper from module Acquisition

Traceback (innermost last): .... File /usr/local/zope/2-1-6/lib/python/ZODB/Connection.py, line 396, in setstate SystemError: (see above)

This signals that a Zope runtime object, i.e. one that is wrapped into an acquisition context was stored into an object to be pickled. I saw this several times: * someone assigned in an external method to "self": self.image= .... with "...." being a Zope runtime object. * someone added a Zope object to a session instance I can not help you with your concrete problem. Dieter