I have a MX-880 remote and a MSC-400. I created a macro to turn off the tv and the receiver (in a closet) for my kitchen set-up. I put this macro on the "OFF" button on the Watch screen. When I connect the remote to my computer and test it, it works fine. However, when I download it into the remote, it doesn't work. The tv still turns off, but the receiver does not. I have had the same experience with my MX-880s in two other rooms.