After Effects CC Lost CUDA Support

Question

We're having an issue using CUDA GPU rendering on both Premiere and AE.  The editor has mentioned that output has recently begun to stutter and skip, and after a bit of digging he noticed that neither program was utilizing CUDA as expected.
We're on a Mac Pro 5,1, 12GB RAM, 3.06 GHz 6-Core Xeon CPU, on Mac OS X 10.8.5.  The graphics card we're running is an NVIDIA Geforce GTX 680.  We have reinstalled both the CUDA (v. 6.0.37) and NVIDIA (313.01.04f01) drivers without any change in behavior.
What we're seeing in After Effects is this:
In Preferences>GPU Information, we are unable to select 'GPU' from the Ray-tracing dropdown.  The message "GPU not available - incompatible device or CUDA driver' appears.  Under the CUDA section, it is entirely greyed out and Driver Version is listed as 1.0, despite us having version 6.0.37 installed.
After some digging around I found a tutorial for setting up CUDA support by adding entries to the cuda_supported_cards.txt file.  Our card is already on the list, but I noticed something interesting when I used the GPUSniffer (as suggested) to get the card information: there is no entry for CUDA, despite the GTX 680 (supposedly) having CUDA support.  I do, however, see it as an OpenCL device.  GPUSniffer output is:
--- OpenGL Info ---
Vendor: NVIDIA Corporation
Renderer: NVIDIA GeForce GTX 680 OpenGL Engine
OpenGL Version: 2.1 NVIDIA-8.17.76 313.01.04f01
GLSL Version: 1.20
Monitors: 2
Monitor 0 properties -
   Size: (0, 0, 1920, 1200)
   Max texture size: 16384
   Supports non-power of two: 1
   Shaders 444: 1
   Shaders 422: 1
   Shaders 420: 1
Monitor 1 properties -
   Size: (-1920, 0, 1920, 1200)
   Max texture size: 16384
   Supports non-power of two: 1
   Shaders 444: 1
   Shaders 422: 1
   Shaders 420: 1
--- GPU Computation Info ---
Found 1 devices supporting GPU computation.
OpenCL Device 0 -
   Name: GeForce GTX 680
   Vendor: NVIDIA (Apple platform)
   Capability: 1.2
   Driver: 1.1
   Total Video Memory: 2048MB

Answer 1

I found a fix to this!
I too noticed when I checked out the Preferences in AE that it said there was no CUDA driver installed. When I looked at my CUDA driver via System Preferences on my Mac it stated that there was no update available for my CUDA driver at v 6.0.54
So I popped over to CUDA Downloads and there was a 6.5 version that also supported OSX 10.10 Yosemite.
I installed it and now After Effects 2014.1.1 uses my Nvidia GeForce GTX 680 GPU in Ray Trace mode!