A schedule request with a 0x0 schedule is now converted to a disable command automatically, this fixes unexpected LED flashing in lampshows where schedules can be 0x0.
http://www.pinballcontrollers.com/forum/index.php?topic=251.msg6791#msg6791
http://www.pinballcontrollers.com/forum/index.php?topic=802.msg6783#msg6783