Only happens on the Nurburgring - but not the GP. Will only do it if there are more than about 15 cars in a race, weather they are AI or real and usually happens if i go from the race monitor back to the main screen.
But can a skin pack alone mess up your windows i wonder?
I tried it on a clean installation from my other copy and it still does it here.
Same, also this is a random thing for me, if you are trying to get the error it probably won't come, usually it just comes at a unexpected and the worse possible time.