My guidance was not for a new MacPro. It was specifically for the OP's system.
If you have a nMP 6,1 system, and you install Resolve 10.1.3, you need to make sure CUDA 5.5.28 is installed, and NOT the current 5.5.47. If 5.5.47 CUDA is installed, Resolve 10.1.3 will not launch.
You can download CUDA 5.5.28 here:
http://www.nvidia.com/object/macosx-cud ... river.htmlOnce you've downloaded it, just install it. You do not need to uninstall anything first.
And DO NOT do what I told the OP to do. On a nMP, do NOT set the GPU processing mode to CUDA, leave it set to Auto.
Do not set the Resolve GPU processing mode to CUDA unless you are SURE you have an NVIDIA GPU.