Yeah, I have a similar problem. I like to build huge ships with the Maritime Pack and NAS. Whenever I spawn another ship nearby so they can fight, the ship that I spawned always explodes right after spawning. There also seems to be multiple duplicates of 1 part when it explodes. Then I'm in the center of Kerbin, the Navball glitches out, and if I go back to the space center, I'll find that it's gone and replaced by space in the back round, and I can't click on any buttons. This started happening after I changed the root part from a piece of the ship hull (which is tweakscaled up) to a normal sized part (Like a command pod or a command probe) because if I reload a quicksave, the piece of hull that was the root part always shrank down to normal size. I'm trying to record a naval battle scene, and it just looks unnatural to have a part of the hull that's extremely small compared to the rest of the hull, and I know I can't get the entire shot done without quick saving and reloading once.
