I can't even get this to start on windows7 x64. Starts..then closes no errors..no nothing. And trust me I have run A LOT of different cg/sgminer variations with countless kernels at this point without any problem.
Are you by any chance running it with cgwatcher? If yes start first time with batch file, than you can use cgwatcher.. don't know why

this was listed in the thread earlier
remove this code from your pool entries:
Code:
"pool-gpu-threads": "2"