Walter,
>>The best you can do is to create a small example reproducing the problem and post it here. Then the VFP team can start looking for something.

Well, thanks. First of all I was glad I could localize the error roughly.
Then: If real world were that easy I woulda brought an example, but the container and the textboxes are based on classes in different files and there are two big PRGs where the array is DIM´d, and, and,...

Finally: I was hoping that someone would say: Uh, ah, you´re doing voodoo with VFP, but I know... <g>

Thanks
G