I\'ve been searching extensively for a possible solution to my error for the past 2 weeks. I have successfully installed the Cuda 64-bit compiler (tools) and SDK as well as
I found that I also had to change the CUDA_PATH and CUDA_LIB_PATH environment variables, because they were pointing to the x86 toolchain (which I had installed after the x64 tools).
After some faffing around with some linker errors, I managed to build a x64 CUDA app!