Hi

I have had Nightlong working on my old A4k and Mediator (no long use that, it works on my peg/mos too ;-)
There are certain files and libraries that you need to have installed for NL to work.
First a suggestion - Copy the entire cd to HD if you have enough room, and then in shell "Assign Q: Games:Nightlong/CD1" (with Games:Nightlong/cd1 wherever you put cd1). This will speed operations up no end.
Once you have finished CD one, erase that, then copy CD2 to the HD. DO NOT assign Q before loading NL when your on CD2 or 3!!!! You will need CD1 in the cd drive when you initially start NL now but after you have loaded NL, then make the Q assign, then load the saved game, and then the cd can be taken out again. Did that make sense?

As to the files needed its been a while since I had that problem. use snoopdos to pin it down. IIRC its the rtg.library and maybe one or two other rtg required files. If you have Clickbooms NAPALM then the necessary files are on that CD. (no idea why they arnt ont he NL cd).
Basically install rtg and it should work.
Hope that solves the problem.
Bifford