Honestly, it seems like neither one of these work for me. I'm 64bit now. It seems really erratic. I was using deb, works fine, everything goes smoothly... and then i start up ksp the next day and going to the vab crashes the game consistently. Similarly, i try to use this mod, I get the same problems. I do have many mods in use, but this didnt really hit me until after the very first releases. I would gather the 64bit is just really touchy right now and these mods are possibly best played with new careers/stable mod packages. Might be this will all really shine later.