So do I need to put the ExtraplanetaryLaunchpads folder INSIDE the GameData folder, or do the contents of the ExtraplanetaryLaunchpads folder (i.e., the Internals, Parts, Plugins, and other folders) need to be merged with the already existing Internals, Parts, Plugins, etc. folders already inside the GameData folder? EDIT: I just tried both, and placing the ExtraplanetaryLaunchpads folder inside GameData works. Several new Hex Cans showed up in the parts list but I still only have one launchpad and that's Launchpad2. Launchpad "one" still does not show up, even though the part folder for it is present in the Parts folder. Also, the reason I installed it wrong is because the instructions in the readme file are not helpful at all. They read "Copy the contents of the GameData folder into KSP's GameData folder." There is no GameData folder inside the zip file, it's just the ExtraplanetaryLaunchpads folder, and the contents of the ExtraplanetaryLaunchpads folder has folders that have the same names as the folders inside Kerbal's GameData folder, so without knowing that it's okay to put the ExtraplanetaryLaunchpads folder inside GameData I can only assume that I have to put the files in ExtraplanetaryLaunchpads/Internals into the KSP/Internals folder and so on. Thank you for letting me know I can copy the ExtraplanetaryLaunchpads folder into the GameData folder, that saved a lot of headache.