Only the places you are trying to land count as far as I am aware. I don't think you need to change them all, and it has been a while since I did this myself. I have never played RSS myself. I would make a copy of the LandingSites config, rename the original to LandingSites.txt, Strip out everything you don't need from the copy, make sure all your brackets and lines are set out are right. Try it with "Earth" and if it doesn't work then try it with Earth , no inverted commas. I only know the Earth part because it is in the original config. Be very sure you haven't made a syntax error anywhere. It only takes a small 1 to stop things working. Oh, also just remembered, the very first 2 KSC runway both directions and island both direction, are hard coded, even if you remove them in the config they will still be on the landing list at the original co-ordinates. @Maker16