Hi Devin, has your question been resolved? I'm experiencing a similar error with a file I received from China. The file does have textures and proxies that were created using Chinese characters. After the transfer to our network, the files were then renamed to English characters so they are now called something like "¦OOIA+-B.jpg". I believe this may be the problem.
For my flythrough, I use irradiance (medium animation) and brute force and render every 10 frames. I submit this file to the farm and select only my machine to calculate the vrmap. As soon as 1 frame is written to the vrmap file, I submit the final render to all available servers on the network (we have only a couple of machines so the final render doesn't catch up with the vrmap render). This way I don't wait for the vrmap to finish before submitting my final render.
When reviewing the frames, I've noticed a flickering/color splotching error on all the machines except mine. My machine has the Google language bar installed and the others don't. Maybe my machine renders correctly because of the installed language bar?
I did get a "could not save irradiance map" error in backburner half way through the vrmap render. Perhaps the renders flicker because of a corrupt vrmap? But that doesn't sound right because my machine rendered every frame correctly from start to finish.
I also thought my workflow of submiting the vrmap to the farm and final render right after could be the problem. But it's always worked fine before. I assume the final render is only reading the vrmap? I've also had error messages on our slooooow network (opening jpeg files!) saying"could not open because the file is currently in use". So I kinda think it's a network problem. So I guess I should wait til the vrmap is completely finished before submitting the final render? That sucks. Does anyone else see any problems this way?