@Pirate Myke, thanks for the info, all good now.
The problem I had was that after light mapping, rocks, bridges, and some parts of buildings looked washed out, like too much contrast or something.
I played around a bit, and while looking at the settings in my older maps I noticed that the 'light rays' setting was on 0, where as on my latest map I had it at 15. So after removing the light mapping folder, I run the process again with light rays set to 0, and the result was great. ( so now I have to eat my words, hehe
)
So, learning curve I guess!
Anyhow, good to know how to revert if needed, so thanks for your help.
OldFlak....
Intel(R) Core(TM) i3-4160 @ 3,60GHz. 8GB Ram. NVidia GeForce GTX 750. Acer 24" Monitors x 2 @ 1920 x 1080.
Windows 8.1 64-bit. Windows 10 Pro 64-bit.