I've been trying to use this miner since the first release on my 9800GTX, but everytime I start it up it crashes the second it starts mining. I've tried every and all settings on different releases and it continues to crash, I have no idea what's causing it.
Are you using nVidia driver is release 304.xxx or later? This reminds me that the next version should really output verbose error messages. I've had a couple of reports where the kernels would just not work for some reason, yet the CUDA card was identified correctly with name and compute capability.