I am currently playing with a number of mods however only about half of the parts of the mods are showing in the parts list. The mods are up to date and the part files are present in the game data folder. An example of this is with B9. I have things like B9 wing segments, but no fuel tanks or cargo bays. Or with the mk. IV mod. I have the mk. IV cockpit and cargo bays, but no mk. IV fuel tanks or cargo ramps. The game is stable, it crashes very rarely but it does happen from time to time. I just want to get access to all the parts I have loaded so I can build heavy cargo planes. Any help that you guys could provide would be greatly appreciated. List of mods: B9 chatterer distant object kerbal engineer mrk IV deadly reentry edit: and I'm just realizing the error I made with the title. derp