I can confirm the exact same error here. Appears to be caused by the compatibility patch for RLO. I'm guessing that because it creates conflicts between SoS Civilization and Realistic Lighting and the Unofficial Skyrim Patch that one of those things has to go...in this case SoS Civilization. It's gotta be RLO, right? This install doesn't even USE Realistic Lighting Overhaul, but rather Enhanced Lights and FX. In fact, having those .esp's enabled without RLO installed is likely to CTD the game, correct?