Hi Paul.

>Which verison of FoxPro?

VFP 7 SP1

>Timer events do not fire all the time, they can get queued up and all arrive at once.
>At least they did in VFP 3 and 5.
>Largely fixed up in VFP 6 and later.

Yup. This is also good to know.
As Sergey guessed, _VFP.AutoYield was set to .F.
CodeMine does it, and I didn't even know about AutoYield. I set it to .T. before the routine and back to what it was before right after it finished. It work fine.

Thanks a lot for your attention.