I was using SpaceEngine so I have the option to choose what format I want. This is the first mod I have ever made for Kerbal.
Edit: Some areas of the planets are lit, even though not facing the sun at all, but not the entire planet is lit. Also some spots are a lot brighter than others. I will post a screenshot in about 15 minutes.
Screenshot 1 (Planet not being lit on the correct parts) I noticed that when I land on the back side of a planet, even though the texture is lit up it is night on the surface. (no bright blinding lights here, normal textures)
Screenshot 2: Landed on surface. (Not a texture problem as textures can be seen fine at night and in shadows)