I am a long time user of version 9 and after not using it for a number of months decided to use V10 and reloaded it on to my desktop. I run Xplane on MacBook Air late 2010 model. After loading XPlane 10 it opened and recognized the CH yoke during calibration. However when I went to run mode the aircraft went into an uncontrollable spiral dive and crashed. Controls were not responding.