I have the last update of X-plane 10 (10.52) running on a Mac Pro and Mac mini. The computer is set as the master computer, while the Mac mini is set for an external view. A GPS Garmin 530 (pop-up screen) view is set on the slave computer. Transmission of data works perfectly between computers (as flight data are continuously updated on the slave computer), however the GPS screen on the slave computer doesn't update the location of the aircraft while flying. The same occurs with the Garmin 430. Any feedback or advice on this ?