Eric Staunovo Polacco

Hi everybody I would need some help regarding my latest payware aircraft.....PMDG's 737 NGX. It's a wonderful aircraft, I definitely love it, but the fact is that it crashes in some occasions... If i take a look at the map and then get back to FSX, i get a whole black screen and the hateful Microsoft's fatal error.... or, if I apply differential thrust, for example for lining up on the runway, it does the same, but by freezing the actual screen, instead of showing the black screen. Now, as I have paid 70 bucks, I'd love to solve this pretty annoying issue.... Any ideas? I'm