Hey,
Steam user here. I tried to use CKAN to install this mod to get some real earth & moon to play with. I purposefully tried to ignore the realism overhaul mod to avoid information overflow. While CKAN was able to install the addon and I could see real earth on the main menu, I got an error message saying that the RSSVE is out of date or something, but I ignored it and jumped into a new sandbox game. The space center loaded and it was night... I could not get into VAB or other hangar. Only the kerbonaut complex building was working. I could rotate the camera and use time warp to see sun rice and sun set, but that was all. In addition, esc + return to main menu didn't do anything either - had to alt+F4 out.
Please send help!