OpenCL failing

I am trying to figure out what is going on. OpenCL isn’t properly showing up after I had it working before. I have two GTX580’s and I can’t get V-Ray RT to compile for GPU rendering. Does anyone know a way to get OpenCL/Cuda to correctly install? I have installed the last 3 Nvidia driver releases but I am having 0 luck getting the OpenCL to work.

Thanks for any help!