I installed the Xeon OpenCL Runtimes for Intel Processors from:
https://software.intel.com/en-us/art...opencl-drivers
They make you register an account. That stinks.
So now I have opencl.dll and RB does not show that error, but it does not start the encoding servers or start itself up. It looks like it is calling openclinfo.exe in the process list but that never completes so the Encoding servers do not start.
If I manually kill openclinfo.exe using the process manager, soon after starting a encoding server, I can get it to start.