Thanks - I agree VFP is trying to display something, but I have dumped the entire memory to a file using SAVE TO FileName, Then restored it in the Command window and re-run the identical command with the identical data and I get no errors. Also this command runs several times a day without any problem, it is possibly 1 in a 100 that gives an error.
>This is why I think it has something to do with someone else and a multiuser conflict.