Hi rob I have tried using downloaded ccf file & my own but they seen to be as unreliable as each other The main device is a DGtech HDTV STB power command gives the most grief i have in the past tried as you explained to learn the codes.Long presses, short presses etc... press & hold the power command button manually and its ok.Put into a macro & no good i tried making a macro with only the single power button without any delays and it failed,with delay and it failed as well, and in a full power on macro with all devices putting a 2 second delay(and the last in the chain also) hasnt helped i have talked to other installers and they have had the same problems.The distributor carnt give me any joy as they think the product is perfect i have been getting a lot of calls with concerned clients saying the remote works good for a day or a week then carnt operate the system anymore i call on them check the operation and shure enough the system is RS.Retweek some files ,adjust delays etc.. upload and the system is working fine 2 weeks later........................................ thanks,Shayne