What code is being run at the point of the error? Do you have any error logging in place that will store information about the error when it occurs? At a minimum, you should be storing the procedure/method name and line number.

>In VFP 8 -
>
>A user reports that they get Error 11 and Error 17 sometimes, but not always when running a form containing a names and addresses in a listbox-looking format. The error occurs when they right-click the mouse to choose a menu item from a menu that has choices such as Add an entry, Delete an entry , Update an entry, etc.
>
>I found Error 11 can be caused by 4 different reasons on the Microsoft knowledgebase. I didn't find Error 17 in the Microsoft knowledgebase.
>
>Any ideas? Thanks ahead of time.
>Hopefully I won't be a stranger here any more. I've got some VFP work waiting in the wings.
>
>Steve Kramer
>Software Developer