I recently tried to install the Realism Overhaul plugin for KSP v1.0.2. Installation was done "by hand" by placing the files in the KSP/Game Data file. Thus, I'm wondering which plugins you are using to make Realism Overhaul working properly on KSP 1.0.2, without using CKAN. I've downloaded the plugin Realism Overhaul v10.0 alongside with it's dependencies : The Advanced Jet Engine v2.2.0 for KSP 1.0.2 CrossFeedEnabler v3.3 compiled for KSP 1.0 (which is the latest release I've seen) The Ferram Aerospace Research v0.15.3.1 (up to date version) compatible with KSP 1.0.3 Kerbal Joint Reinforcement v3.1.4 Module Manager 2.6.6 Module RCSFX 4.1 Real Fuels v10.2 for KSP 1.0.2, I assume ? Real Chute v1.3.2.3 for KSP 1.0.2 Real Solar System v10.0.1 Smoke Screen 2.6.3 Some previous versions of Module Manager (v2.6.1, v2.6.3, v2.6.5) were already included in some plugins too. PS: I'm running the KSP 1.0.2 on a windows 64bits. Realism Overhaul seems to stop the game when files are still loading. Thank you.