The pronto does not control one of my units despite the fact that it(pronto) learned the codes. The unit is a cable music choice box by General Instruments. I tried copying the IR code of the unit to another remote and then to the pronto to no avail. The baffling thing is that pronto learns the codes. All my other remotes work the unit fine. I also tried the suggestions given on "Sony DVD S7000 and the Pronto" a few postings down but no success. Does anyone have any suggestions, and has anybody else experienced similar problems?