>>>I have tested Peter's problem #1 and occurs the same to me.
>>>
>>>This is the reason i've not answered to him.
>>>
>>>I suppose that enabling optimistic buffering to form, it assumes that is row buffering, not table buffering. In order to work with getnextmodified i must especifically set buffering to each table.
>>>Carlos.
>>
>>Another idea then - to check the buffering mode on the live form in Datasession window. I have met the situations when despite of explicit buffering settings in DE the buffering mode by some reasons switches off, and I had to set it through CURSORSETPROP in Form.Load()
>
>Ok. That's a solution. But i don't know why buffermode property of form does not have five options instead of two.

Thanks for the help, my workaround has been to set the bufferoverride property of each table to 5 - Optimistic Table and this works fine but!!, my form buffering was and is set to 2 Optimistic, so "use form setting" should be ok
Regards
Pete