The dark brotherhood. Crashes (S.T.A.L.K.E.R.: Shadow of Chernobyl)

How are going to report about the scar the arrow in the red forest turn into the forest game twisted everything was in gold, to press anything I can't and I xr I xr I run through, deleted user file, nothing helps, game reinstalled a hundred times and still on the red forest the game like a heart attack starts and crashes, please help what to do!?