in your OBDWW1 folder, got the error message above and removed the two d3d9 files and now it works ok (but I assume with Sweetfx not working)? And you have the SweetFX_compatibility_settings.txt in the Sweetfx folder in the OBDWW1 folder? And your other folders look like mine pictured in the posts above?
Beyond that I'm not really sure. I know there were a couple times I did a double take during the instructions, so maybe trying again just to be sure.