Super DOF not Working properly

I need help. Super DOF is not working for me! When i try to use it it gives me a black screen with its menu. When i press render its all black screen and then the menu comes again, but background is STILL BLACK. I need help with this. And no, i CANNOT turn off multicore rendering. Please fix this or give me any way to fix this. MY Graphics Card is NVIDIA GEFORCE 320M.