I still have one file which simply refuses to network render, but I'm going to assume it became corrupt somewhere along the way, and hope I don't find others like it.

E-on said they could not reproduce the problem.  I finally got a scene with GI to render (all the way through!) via hypervue yesterday, after changing the encryption. 

Strangely, this only seemed to be an issue with the 64-bit windows 7, not the 32-bit.

Thanks again,

Intel Core i7-8700 6-Core 3.2 GHz (4.6 GHz Turbo), 32GB RAM, two GeForce GTX 1080 Ti GPUs

DS 4.10, Photoshop CC and CS6, Poser 11 Pro, Vue 2016, CarraraPro 64bit, Autodesk Inventor, Mudbox, and 3DS Max

One in 68 children is diagnosed with autism.  One is mine. ♥