@nitropic When 1.2.1 came out, I installed a fresh game and proceeded to add the various mods I use that were updated. I'm still running 1.2.1 (not 1.2.2) because it's a pain updating things every time there is a minor game revision. Here is what I did:
Fresh install of 1.2.1
Installed various mods that I use
Install latest version of Scatterer for KSP 1.2
Install Real Solar System v12.0 for KSP 1.2
Install RVE-KSP-1.04-Linux64 (works with Windows)
Install latest version AnyCPU-EVE-Release
That's it as far as I can recall. It's possible I may have missed some step, but I know for sure that I didn't manually modify anything. Perhaps worth noting, is I install mods manually (unzip into GameData folder). I don't use CKAN because I've found it to be problematic in the past.
I hope you get things working, because clouds and city lights definitely adds immersion.