What a coincedence! I downloaded a new scenery pack last evening, Florida Central from Ted Davis, and noticed the same issue. Runway lights were only visible upon being very close to the touchdown zone. Further out the lights were just not visible. I assumed this was an issue with the scenery pack. I shortly shutdown the simulator and went away from the computer. I hadn't even thought that the runway lighting problem could have been related to Tom's Fly With Lua scripts. I will be interested to read what others have to say about this and to test further with X-Plane when I have an opportunity to.