graphical distortions when propwash snow in winter

[bszuch]

I'm getting wild black and magenta graphical distortions all over the screen when my plane comes to a stop on the taxiways with the winter textures and the propwash is blowing the snow. Once moving again, they go away. Love the airport, Was just there on business last Wednesday. I'm using AS Chicago (thanks for the gray texture fix solutions in the other posts....that worked), and I'm running DX-10 - FSX SP2 boxed.