As far as I know, I'm doing nothing that complex. I am creating a
pile of mapped objects in Python and then dumping them to the
database. The most likely cause is that a field is None, or of the
incorrect type in some way, I would have guessed.
Andrew
On May 7, 9:56 am, Michael Bayer
manager is an attribute on InstanceState that is set at construction time,
and is never changed thereafter.Looking at your error more closely, its not
that manager is None, its not even present. That can only happen if
something del'ed the manager attribute, the InstanceState somehow went
