Hi Michael.

>>However, if I happen to click anywhere else on the form itself, while the combo box is opened, I get an error saying that the setfocus command is not allowed in a valid clause. This doesn't make sense, because the setfocus command works fine from within the combo box. <<

The fact that you can issue a SetFocus() from the Valid() of a combo box is the anomaly. The Valid method is used to decide if a control should be allowed to lose focus. Try switching your setFocus() from the Valid of the combo to the LostFocus(). And don't forget to add a NODEFAULT after you issue the SetFocus() when you move the code to the LostFocus method.

Marcia