Just drop the GameData file in your ksp's file,make sure there is no RSSVE file in your GameData before insall,and delete the \GameData\RealSolarSystem\RSSKopernicus\Cache folder at the same time
link:
I come across the same problem like Jane Monroue
Saturn's ring don't get the right shadow,but I do some modifiy on Theysen's RSSVE and let it work with EVO.
It's clear that this action violate CC-BY-NC-SA 4.0 ,so I can't release it