>Experts,
>
>In preparation to launch an appliccation to my client, I want to ensure that they do not install more than one copy of the software on one computer. Any ideas on how I can accomplish this?

I guess you mean that you want your users to only be able to run one instance of your program at a time? If so, check https://social.msdn.microsoft.com/Forums/en-US/f76d5b25-25a7-4ba1-b192-378729f3a437/how-can-i-make-a-singleton-ie-can-create-only-a-single-instance-at-a-time-application-in-vfp-60?forum=visualfoxprogeneral