Help with Iray on MacOS

I have a MSI 1060 graphics card installed in a AkTtio node eGPU connected to a 2018 MacBook Pro via Thunderbolt 3 and used "purge-wrangler.sh" to enable external GPU support on the mac.  I installed the latest Nvidia Web and CUDA drivers.  

  • NVIDIA Web Drivers are: 387.10.10.10.40.108
  • NVIDIA CUDA Driver Version is 410.130

Whenever I try to load Daz3d it hangs during launch.  If I switch from"NVIDIA Web Driver" Graphics Drivers to the "Default MacOS Graphics Drivers" Daz3d will load but without the 1060 being visible.

Checking the log file I get the following error when it hangs during launch:

2018-11-21 16:20:57.997 Iray INFO - module:category(API:MISC):   0.0   API    misc info : Loaded "/Applications/DAZ 3D/DAZStudio4 64-bit/libs/iray/libneuray.so"
2018-11-21 16:20:57.997 Iray INFO - module:category(API:MISC):   0.0   API    misc info : Iray 2017.0.1, build 287000.7672, 23 May 2017, macosx-x86-64-clang
2018-11-21 16:20:57.997 WARNING: /src/pluginsource/DzIrayRender/dzneuraymgr.cpp(403): Could not add path: "/Users/bmenges/Library/Application Support/DAZ 3D/Studio4/shaders/iray". Due to unkown error -2

Anyone have this problem and know of a solution?  

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