>I remember I had similar problems, but I have not remember the solution -

I figured out a trick... I added a property to the formset; and use it as a flag for the formset's ReadValid() method.

In my button; i set the flag to .f.; and in the readvalid event; if it's false, I set it to true (for next time) and then return .f.

This seems to get around the problem wiht no side effects...