Shermann wrote on Oct 27^th, 2014 at 7:31pm:

Hi , Just yesterday i bought the CS707 for FSX and after installing it and started a flight Cold and dark after a while all knowbs were not clickable.

Try following: Save the flight, restart FSX, start the saved flight. When the flight is finished loading, load the same flight INSIDE from that flight again. This could help  ;)