Thanks for all the replies...

We found the problem. We are using BDE for connectivity. We were trying to
pump over data to a new DB. We have huge scripts to create the new tables
and pump the data across. We pump the FK constraints last to make things go
quicker. We made the mistake to not create the PKs for the same reason.

At that point the tables did not have their PK constraints yet. This caused
the error. Unfortunately the error messages gives no clue as to what the
problem was. This stupid error cost us 6 mandays at a time when we could
not afford it.

We created the PK constraints and everything was fine.

Regards

Louis