>Notify is off (confirmed with SET('notify') in the valid event)
>The problem does not happen when Valid() is called at form level, returns .f. and the ErrorMessage event called.
>
>Any other suggestions would be much appreciated.

Glenn,

Do you have field level valid rules defiend in the DBC? Do you have field level Valid Messages defined in the DBC? If you have rules with no messages then you will get what you see. The DBC rules will fire on your fields as they are updated.