This sounds weird, but when i uninstall KSP and delete anything from the steamapps, common folder, and then reinstall it, some stuff that is not included in the base game gets installed. This problem has only occurred with mods i have installed using ckan. i am not sure that i have fully uninstalled it, but that may be the case. pretty much, is there anyway i can delete any and all files that are used for ksp or CKAN so i can have a fresh, clean copy of KSP?
Also, i'm using the steam version of KSP. Just wanted to clarify.
These are also some pictures: https://imgur.com/a/uZaImRw