When I programmed my microsoft windows remote in my philips prontoneo, i could only use one action at a time so when I used channel up it worked only one time and after that i could only use another button on my remote for instance channel down but never two times.
To solve this problem you must use regedit.exe and search for item EnableDebounce (mark all find options). Set the data from 1 to 0 (do so at all founded locations). Then, reboot your computer. And after reboot ik worked fine!

greets

snuf