Ep 3.3 login error

If i start it now, then comes "airrivals.atm doesnt work" or if i use "aceonline.atm" then comes "file cannot be found" How to solve it?
Its german but it means "Airrivals.atm doesnt work.
The Programm got an error and must close.The Programm will be closed and we will tell you, if we know how to solve it.

So please Help Q_Q

use another launcher...
file cannot be found happens, because the launcher tries to open AirRivals.atm and not ACEonline.atm

okay mhm