if you use with Enable Application Framework, and check the option
"Make single instance Application" you can suprise to know that this
option Register tcp Chanel. So if you meant to register one by tour
self, your program give Error that you cant do it twice.

Any MPV to tel us why, and how?
(according my test, the "Make single instance Application" not prevent
multi instance on multi session on Terminal server. so why this option
not check by process name?)