OK, still having trouble. All three units are daisy chained together. Units are # 01, 02, 03. I hooked up my comm to 01. When I refreshed, the hardware saw all 3 units and I successfully downloaded my sequence into unit 01. I unhooked the comm and turned the units on and like every other time the 3rd units lights would not come on and the lighting sequence of the 2nd unit was screwed up. When I turn the power off to the 3rd unit, the 2nd units lighting sequence worked fine. I have tried using different LOR units and changing the unit order and #'s with no success. Speed was 06 on all units. Any other ideas?