Koos,
Check out message #630560 . THe simplest, using VFP 7's ISE, is to change the GUID using the button.
>Dear All,
>
>When we distribute our applications (large VFP executables) we would like to be able to send Service Packs later that are small files (a few hundred K's) with upgrades on the EXE file. Is this possible in VFP?
>
>Koos Veel.