So there's how it all started:

 I was messing around with one of my old prop plane designs with the overload mod, and I decided to add more blades because who doesn't like more blades? So I start out with 10, then 100, then 1000, then, 5000, and the next number where the problem started. 

 After I had loaded in the 5000 propeller engine I was going to do a 10000 propeller engine, the only problem was that I added an extra zero by mistake, and now every time I try to open up the sandbox, my game crashes after 2 minutes of a blank screen.  

 I've tried opening another plane file, but the same thing happens. At this point I don't know what to do.

Please help!