When I run the GPU sniffer is get this; Code: MacPro:~ tess$ /Applications/Adobe\ Premiere\ Pro\ CS5/Adobe\ Premiere\ Pro\ CS5.app/Contents/GPUSniffer.app/Contents/MacOS/GPUSniffer Texture memory: 0 Vendor string: NVIDIA Corporation Renderer string: NVIDIA GeForce GTX 570 OpenGL Engine Version string: 2.1 NVIDIA-7.33.0 OpenGL version as determined by Extensionator... OpenGL Version 2.0 Supports shaders! Supports BGRA -> BGRA Shader Supports VUYA Shader -> BGRA Supports UYVY/YUYV ->BGRA Shader Supports YUV 4:2:0 -> BGRA Shader Testing for CUDA support... Didn't find any devices that support CUDA. Completed shader test! Internal return value: 7 When I search around for solutions I get threads from 2011 saying to use older CUDA drivers but when I try that I then get errors: Code: Testing for CUDA support... GPUSniffer(342,0x7fff7d498960) malloc: *** error for object 0x1075000b0: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug I added the card name "GeForce GTX 570" to the "cuda_supported_cards.txt" anyway but of course I don't get CUDA rendering. Any solutions not from 2011?