I too have recently started to get dark background and no planes in the free flight screen. I can select my planes and when starting fly now, I get panel working but no scenery in any view. This is fsx w/acc. I have gone thru my config and there is no difference from my other computer. 660 nividea-3gz-8g_mem with 2 tetra..Running from tetra drive.Has been working fairly well for this year but when I added new planes 2 weeks ago it just reset after fsx 1st sim screen.