You may have to just run it as an Administrator (the launcher for the Editor that is), I do have a feeling that a fair bit more will have to be done to solve this problem, by all means, try what others have said to do first and then, this as a last resort, I do not have experiences with my editor crashing you see, lucky me, but once again, only try this as a last resort, I am sorry that I cannot offer, I dare say, far more specific help, my apologies.