>>Ernest
>>
>>Just to be clear on the problem: If you do not have the listview on the form your cancel button releases the form OK. Only when you add the listview to the form does your cancel button stop working properly. IOW, are we sure its the listview causing the problem?
>
>For sure. I have two buttons, Display and Cancel - The Display button's click event has the above mentioned code that populates the listview. If I load the form with the listview and click only Cancel - the form releases properly.

OK. How about changing the Display click code to only load a single loop of data and then trying the Cancel button. IOW, I'm suggesting to try to eliminate potential causes one at a time.