I have a late 2010 MBA. Just returned from a 4 hour plane trip - used a bluetooth headphone to listen to a movie, played on my MBA. An error window now appears repeatedly: "A Bluetooth audio error occurred. There was an error connecting to your audio device. Make sure it is turned on and in range. The audio portion of the program you were using may have to be restarted. Stop using headphones." The window will only disappear when the "Stop using headphones" button is pressed. This window appears again repeatedly. Suggestions?