Hey guys, so sorry that my first post on the forums is due to a problem I'm having but I'm pretty stumped :/
So I have the 2012-11-18 version of guiminer and I'd like to mine on my gtx480 in the BTC Guild (using the US-Stratum server). All my video card drivers are up to date. When I attempt to mine with the default setting (CPU Affinity left all blank except for the first core) and the correct username, etc. I get "NameError: name 'OpenCLMiner' is not defined" in the lower left corner and am continually stuck at "Starting..." on the right corner.
When I make a new CUDA miner (I downloaded CUDA from Nvidia this morning as well), I keep all the setting the same, but when I click "Start mining!" nothing happens at all. The button is depressed, but the status at the bottom right still reads "Stopped" and I see no change in the window.
I've searched a bit about the the NameError (though I obviously still couldn't solve the issue), but haven't really been able to find anything about the CUDA miner issue. Any help would be greatly appreciated!
I'm using guiminer on a dual GTX480 system pushing around 120MHash/s to a stratum server. Guiminer is just a wrapper for poclbm (PyOpenCL bitcoin miner). All new Nvidia drivers include OpenCL support for their CUDA cards, so create a new OpenCL miner -- not a CUDA miner. If your GTX480 doesn't automatically show up in the Device box, then you need to download new GTX480 drivers. If you have multiple 480's, you should see them all with the Device box pulldown.