Exevium

Yes, this is caused by HyperEdit. I had the same problem, and I solved it by simply uninstalling and reinstalling it. (Using 1.3.3)

Thank you for making this mod! This helps me so much when testing different ship configurations. Instead of going out to Duna and discovering there that I forgot a parachute or something, I can just edit my ship there in a Sandbox and try it before I actually send the ship in Career. Why does the ship jump sometimes when I press . (timewarp)? I uninstalled and reinstalled and it was all good, but it was a bit weird.

So I just started a new career, but every time I go to launch the mandatory first space craft, it turns out there's a big rover wheel on the launch pad, causing the rocket to jump into the air as soon as the physics load. And since it only has a SRB, it's basically uncontrollable. The second problem I encountered was, whenever the rocket lands nose up, and I do get a chance to launch it, it explodes when the SRB is empty and the speed drops below 347 m/s. So I can't even land the space craft whenever I do get to launch it. I did try to create a new save game, but it has the same problems as my first save. Does anyone know what I can do about this? I would look in the game files, but I'm not too experienced with KSP, so that all looks like gibberish to me.