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>>So does the form.Unload() run ? Does the datasession disappear from the Datasession window after the form is released ?
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>Now that I learned from Jim Winter how to view Data Session window as the form is opened and closed, I observed the following.
>When the form is closed Data Session shows a session Unknown(4) which has alias of the cursor created in the modal (private data session form). And this cursor was created with SQL Select From the table with which I am/was having the problem. I don't know if it means anything though.

It means there is a dangling reference as Viv suspected. Now becomes the fun part <g> You have to figure out what does create it. Are you storing some other forms as this form object property?