Pixel Bender install problem

Question

Hello,
I cannot for the life of me get Pixel Bender installed on my windows xp pc. I get an error that says;
"pixel bender critical errors where found please see log file"
I do not know how to solve this, I did have a trial of CS4 which had the same error message when I tried to uninstall that. I looked around and was advided to use the clean script which I did to remove it and get rid of the reg entries.
I can't find a way around this, someone please help.
Neil

Answer 1

i'm very sorry here is the code (working) :
<languageVersion : 1.0;>
kernel SimpleLight
<   namespace : "Your Namespace";
    vendor : "Yossi";
    version : 1;
>
    input image4 src;
    output pixel4 dst;
    parameter float3 lightPosition
        <
           defaultValue: float3(0,0,-100);
        >;
    void
    evaluatePixel()
        pixel4 pixel = sampleNearest(src,outCoord());
        float3 Normal = float3(0.0,0.0,-1.0);
        float3 pixelPos = float3(0.0,0.0,0.0);
        float3 Kd = float3(pixel.r,pixel.g,pixel.b);
        float3 lightDir = lightPosition - pixelPos;
        float diffuse = dot(Normal,normalize(lightDir));
        float3 res = Kd * (diffuse);
        dst = pixel4(res.x,res.y,res.z,pixel.a);