FDT error : Could not connect to the player, will try to connect for the next 72000 ms [Info] Listening to port 7935.

Select the Adobe Flash Player in viewer configuration
Run –> Run configurations –> Select your Launch Configuration file –> “Start” tab –> Viewer configuration.

Make sure you point out to the Debug version of the player in Windows –> Preferences –> FDT –> Tools –> Flash –> Flash Player. In my case the path is C:\Program Files\Adobe\Adobe Flash CS6\Players\Debug\FlashPlayerDebugger.exe but you should adjust this to wherever your Debug player resides.