tmpgenc 4.0 xpress: cannot enable CUDA Running 9600 GT and 8800 ( NOT SLI )

First of all this forum is mainly for Developers of CUDA applications, So why do you think you will get support for a 3rd party program from this forum.

2nd, The program you have cough purchased is made by someone other than Nvidia, which means you should likely contact the developers of the program either via there suppport Email or at least there forums. http://www.tmpgenc.net/en/forum.html