All lights on the NGX are visible (and can be switched on/off with the corresponding switches), except for the cabin lights. They don't show on the airplane. I've tried the Automatic/Manual and the 50-100% settings in the NGX Options (FMC interface), but no results. I have no idea what's causing it. Anybody having the same problem (and hopefully having the solution)?

Found another thread in this forum in which the KLM livery is mentioned as the cause. I'm also using the KLM livery (800/900 WL versions). I don't know much about livery design, so can anybody please explain what's wrong with the KLM livery and if it can be fixed so that the cabin lighting does show on the outside of the airplane? Thanks!

Just incase other ppl experience this problem and wonder how to solve it. It is actually quite easy, once you know it has to do with the KLM livery. After the release of the NGX I downloaded the KLM livery for the 900/WL version (file was date stamped aug 5th). I never looked in the download/livery section again, because i had no idea it had anything to do with the livery. However, on aug 16th an update was provided for that KLM livery that fixes the cabin lighting problem. So...just download the KLM livery update for the 900/WL version (date stamped aug 16th) and install the new file...problem solved.