onError: This event is fired when an error in the player occurs. The possible error codes are 100, 101, and 150. The 100 error code is broadcast when the video requested is not found. This occurs when a video has been removed (for any reason), or it has been marked as private. The 101 error code is broadcast when the video requested does not allow playback in the embedded players. The error code 150 is the same as 101, it's just 101 in disguise!