Yeah yeah the pack was made hastily, I doubt any direct3d shader would work since raine uses opengl, although maybe ? (seems unlikely though !).
So yeah some shaders are broken, they were clearly not even tested, just assumed to be compatible.
For the glsl shaders, yeah good idea, but I am no shader expert, I already had some trouble to add the old shaders support, so... !
But I agree, it would be a good idea ! (actually the name is bad, all shaders for opengl use what is called glsl).