Csscaffold, image url problem?

Question

I am using csscaffold 2.0.7 ("http://github.com/sunny/csscaffold") trying to get this code to work:

@constants {
 path: "/images/sprite.png";
}
.my-div{
    background: #000 url($path) no-repeat  0px -100px;
}

Trying to make that code work, its outputting:

Missing image - \\css\/images/sprite.png

Directory:

-scaffold
-css
-images

What am I doing wrong, I am on Windows 7? If it is a parser problem, the path (I don't want to put images into css, that doesn't make sense to me), what would be the best way to escape this with sass?