What is your rowsource? Have you tried a recompile form *.scx?

>Oh, related to this problem:
>
>Is there a way to debug which combo box on the form is failing? When I try it just starts the debugger on the "do form ..." line.
>
>(BTW, still can't figure out whats wrong with these things, redid all the control sources, still having problems).
>
>Matt