@jcasman Did you try opening the file in GIMP? Opened up on Linux with the newest version of GIMP.
It may be more meaningful to test the file in Maya, Blender, or even Unity. I have only used the exr file from the plug-in in GIMP. If you have a nice scene that you used for the EXR file, please send it to me. Something outdoor with light and dark would be good. I’ll try out some of the lighting techniques tomorrow.
This plug-in is a massive improvement to the workflow.
If you want to try Blender, or Maya, check out these tutorials.
Blender
Maya
or