I'm on Windows, using the 32-bit executable. As far as I can work out, my game is loading NH the first time I start it up after installing the mod files, then reverting to the stock solar system. EDIT: I uninstalled Universe Replacer and it seemed to fix the problem. Any idea why the two mods should be incompatible? EDIT 2: Hate to sound like I'm nitpicking your great work, but the "Explore Sonnah" contract keeps disappearing. I accept it and get the advance payment, then it just goes away as soon as I exit Mission Control. I can keep the money, though, so it's an infinite money source. No idea why this is happening.