I have been a long time lurker on the forum but I finally have a problem that I cant seem to shake. In the Interstellar mod, when I mount a fission reactor on a space plane, rocket, or any other vehicle the assembly goes just fine, but as soon as the vehicle or plane is rendered on the launch pad the reactor unclips and 'falls' through the rest of the rocket or plane to the ground, exploding but causing no damage to the vehicle. Interstellar is currently the only mod I have, besides the most recent MechJeb. I am pretty certain that the program is up-to-date, and it runs well besides this one glitch which pretty much makes the addon useless and unplayable. Any ideas? Thanks,