FX 4600 as CUDA 2.1 problem

I have problem . SDK - Ocean FFT have not running on my FX 4600 , ( error shader ) . Can You help me ?
I had previous CUDZ 2.0 driver and that problem too on my FX 4600 and shaders . When i installed WHQL driver all that right .
What i ought to do with CUDA 2.1 in order to eliminate that problem ?
In previous version SDK 2.0 is all right . Why on SDK 2.1 Ocean FFT do not running ?