>Yes, it does. I have more refined when it happens and have gotten rid of it, but it's still a pain.
>
>>>BTW, here's an interesting twist: If I move the class Refresh code into the instance and don't DODEFAULT(), the error never occurs.
>>
>>John, I'm sure that you have already figured out that this has to be due to the state of your controlsource or rowsource. Your code as posted works fine as long as there is data in the rowsource and controlsource.

Did you determine which it was? Could you correct the problem by selecting the table during the instance refresh method?