I havent heard of this before and am wondering has anyone else experienced it. I have the 745 in one room using a one 4 all IR transmitter / reciever. Transimitter sends signal to other room (about 10 feet away) and the other little reciever recieves it. I have used this for 6 months now, but when I added the 745 I thought it was finicky when it came to remotes. I changed the batteries and still it only responds 1 out of every 10 remote button presses. As soon as I plug out the one for all, Bingo....works fine. Any idea, I was going to change to a Xantech or something that uses repeaters...would I have the same problem I wonder??