Sorry to bother you, when I take the DO \master\master.prg or master.exe out of the Exit button of my called SCA app and run them, both the SCA app stops and so does my Master app that called the SCA app.

Here's the code in the SCA button on my Master app Main Form that works in conjunction with that Master.prg that I showed previously:

SCA button in Main Form of Master app -
* Start the SCA app
proc = "SCA"
CLEAR EVENTS
thisform.release

Exit button in Main Form of SCA app -
CLEAR EVENTS
thisform.release

There is still something wrong somewhere, but I can't put my finger on it.
Thanks once more!