Is your card supported?
#1
Exclamation 
Check the following links to ensure that your video card is supported by stream or CUDA. As a general rule, all new cards will be supported, but full functionality may not be enabled until the next release of HashCat.

NVIDIA:

http://developer.nvidia.com/cuda-gpus

AMD:

http://developer.amd.com/tools-and-sdks/...atibility/

If your card is not listed here, it most likely will not work.
#2
Thanks for this, very useful