Grounds shadows/reflections settings will not "stay in place"

[nowickim]

I'm using KeyShot 6.0.264 - the floating license version.  I'm running it on Windows 10 64 bit.  I'm having an issue where the "Ground Shadows" and "Ground Reflections" settings will not stay in place.  In other words, I check off both of these and it works great.  But then as soon as I start a network render, the settings revert.  And if I preview the network render I can see that the shadows/reflections are indeed gone.

I've uploaded my model using WeTransfer so you should have the file now.