What do you do when you've upgraded to Win 8.1 and it won't accept an AMD/ATI driver older than the 15.15 Win 8.1 installs. FSX crashes as soon as Fly Now is pressed. I got it to run by selecting DX10 preview in FSX but some textures are lost. One of my favorites is Roy Chaffin's B-25 and it renders all white, even the control panel. He tells me the B-25 won't run under DX10.