Well, have to admit - ******* saves. Tried this fix today and finally - no problems with MD11 anymore. I was able to get consistent crashes (missing textures/black screen) by loading the MD11 at a demanding airport (EGLL, KJFK, YMML) and switching some views, using the menu etc. FSX also crashed when using 2x time acceleration on long hauls - usually after 1-1.5 hrs. The only solution was to use dx10 preview which caused a lot of other problems. Now it seems to be ok. Still have to do some more testing but I'm already very happy with the results. Thanks so much!