I tried and that didn't work. Everything is still 'None'. I do have my project saved to a different drive, not my C:\ drive. I do not know if that would cause anything, though, as my entire Epic Games installation is on my D:\ drive.
All of my materials are in one directory (uncreatively named 'SourceStuff') in my project. I tried to separate them in a different project but I still ran into this issue.