I've always had the CUDA exes tell me that they don't work with my video card, I'm using the GTX580 with the latest forceware 306.97 drivers, that was never a problem before because I just used the OpenCL variants.
But I'm giving the Multiforcer a go now and just want to brute a basic LM hash and this is CUDA only so need to sort this out, any idea where is best to start troubleshooting?