Not sure if this is the correct place to post this, I searched the forums and think this is the thread, however, I'm sure someone will correct me. I'm not able to get Mechjeb 2.4.2 working under KSP 90 - I purchased the full version off of the KSP site, and am able to get the game to run; game seems to work fine in Career and Sandbox mods, however, MechJeb2 doesn't show up. I extracted the zip file in KSP_win/GameData it extracted into a MechJeb2 sub-directory. I'm running Windows 8.1 and the 32 bit version of KSP. Any help, or a pointer to where to find help would be nice. Thanks, Denis