>> Ronald wrote:
>> Do you use a TServerRequest in your detailform that has not finished yet?
>> I mean that the Request expects the OnComplete event, but since you have
>> freed the form it is not available any more and generates the errormessage.
My error was much more fundamental (see my post above).
Cheers for all responses. I'll bludgeon my way through this programming lark yet, you'll see.