Well I'm invious :( I've checked and recheck everything more than a dozen times. I haven't stumbled onto the problem or the solution. Can anyone say what leds on OZY mean if after loading the software D2,D3,D4,D5 & D11 are NOT on. D1 blinks rapidly. This is a two board configuration, Ozy and Mercury. I think Mr Ozy is dead. Thanks Hulen K5HCS