all my stuff is up to date, when i try to play through steam it crashes still. i tried space explorers suggestion and copied everything to a C:/Games folder, the game was able to start, but then i ran into a entirely different problem. i got the game to run, but the game was not able to load any ships or parts. i checked the parts folder of KSP, it was completely empty. i thought that there was a problem with copying all the files over from the steam files. i looked in the Parts folder of Steam KSP, and it was completely empty too! i don't even know how, or how i was able to play the game previously. ether way thank you for your help (and sorry for the late reply) *as a side note, i just started a new quarter in school, so I've been busy for the past 2ish weeks. that's why its taken me so long to reply.*