>> It's just a point: it's much more reliable to use cursor with all
>> fields+'RTC' as RecordSource all time and hide/show ColRTC (reset
>> Visible,Width,Resizable properties) by user request.
>
>Thank you for the hint. But I still would like to know why VFP crash. I'm
>using a lot of grids and I don't need more surprises ...

Do you remember what 'encapsulation' means? Don't go inside, especially if you are not paid for this.