I've installed Environmental Visual Enhancements along as part of Astronomer's Visual Pack. I start up the game, but I have no clouds or city lights.
I know I've installed correctly, because I followed the instructions and both the BoulderCo and EnvironmentalVisualEnhancements folders are in my GameData folder.
I will let you know I use the 64-bit version of KSP
Link to Google Drive (where the output_log.txt file can be found)
https://drive.google.com/drive/folders/0B5E1epE2TJwQRk5WTDVFRjNOUjg?usp=sharing
Screenshot, by the way:
List of mods I have installed:
B9 Aerospace
BDArmory
Firespitter (dependency for part packs)
Hangar Extender
Kerbal Attachment System
Kerbal Engineer
Kerbal Konstructs (dependency for KerbinSide)
KerbinSide
Kerbal Inventory System
Kopernicus (dependency for planet packs)
Lack Luster Labs
Mech Jeb
Near Future Electric, Propulsion, Solar, Construction and Spacecraft
Outer Planets Mod
Planetary Base Inc.
PlanetShine
TextureReplacer
TweakScale
ModuleManager 2.6.5