Same problem repeated itself.
I can only repeat my previous answer: by trying to make the program more resilient to crashes caused by other reasons (other addons or simply OOMs), which would cause an hard crash of Couatl.exe, which users might be mislead thinking it was the cause, there's a small chance the Reset sometimes might not work.
Yes, it happens to me sometime, like 1 out 10 times, but right now, we haven't be able to understand why. The issue is, you are using the Restart function JUST because you have a problem with the Concorde X, but that's NOT supposed to happen in the first place.
The Restart function should be a last resort, not to be abused with, because I suspect that with too many addons loaded, it might become less reliable so, the correct course of action would be trying to understand why there are issues with the Concorde X, and don't use Refueling with it IN THE MEANTIME, instead of stressing the Reset function, which was never meant to be used normally.