Here might be a stumper. I can see the "More Info" on any file I choose… once. After I close the Get Info window and open it again, More Info is blanked out.
I closed the window (first screenshot) and immediately opened it again (second).
No idea why this happens. Getting Info on something else and leaving the folder and returning don't restore it, but relaunching Finder does… for one more viewing. Could be a cache file is broken?