I've got two NVIDIA GTX 480 cards installed in my Windows 8 PC with the latest beta driver installed (through Geforce experience). I was hoping to try out Litecoin mining, but every time I run it I get a debug pop-up right after the autotune process happens and cudaminer declares a kernel to use. I'll copy/paste it in here (with minor edits to clear the machine specific stuff) in case it helps diagnose the issue.
cudaminer -D -H 1 -i 1,0 -o stratum+tcp://<url> -O <user>:<pass>
...
[2013-11-06 20:38:56] 353: | | | | | | | | | | | |
| | | kH/s
[2013-11-06 20:38:56] 354: | | | | | | | | | | | |
| | | kH/s
[2013-11-06 20:38:56] GPU #0: 71.63 khash/s with configuration F7x8
[2013-11-06 20:38:56] GPU #0: using launch configuration F7x8
I was hoping to get help before posting an issue on github.
