Direct X questions

I'm having trouble with the Direct X portion of the install. I have DX11 installed on my machine. The error message I'm getting is not related to the cryptology issue. I'm getting an error that in the DXError Log says Error 32: the process cannot access the file becuase it is being used by another process Unable to iterate through D:\DirectX9\Apr2006_dxdx9_30_x64.cab Anyone have an idea what this one is? Is it becuase I have DX11 running already? The plane installs and loads, but in my first real flight I started having graphical glitches - and then the plane "fell apart" after accessing the alt menu - the textures disapearing and the gauges disapearing. I've submitted a ticket but if someone can help me here I'll cancel it and let them help someone else. Thanks! Colin WAre