> OK thanks - but just as another aside. Why are param values
> being assigned at all during a dataset closure?
> What about a check for isClosing or some such, and avoid the
> assignment. The assignment never causes an error when the
> dataset is open.

You probably need a call-stack to be sure... my first guess
would be a master-detail arrangement. It is normal for an
IBO dataset to close temporarily in some situations... which
makes it less easy to do simple "isClosing" checks.

I am not saying that you have not found a genuine problem,
only that there can be reasons for this sort parameter update
behaviour during form shutdown. Jason is going to need more
info (at least a call-stack, else an example app) to be able
to study that aspect of the problem.

--
Geoff Worboys
Telesis Computing