Also there is a problem with double exe process all the time.My FL game will not end in normal way (and i don't know why)
@ OP
There is a solution for this if the Launcher is customizable:
Since it is running in admin modus already a little batch can be called containing this command line: taskkill /im processname (2 are needed). For lower Versions of Windows such as XP Home, 2k, Nt it can be stored somewhere in the FL Dir.