Hello Jeremy,
I reset the font size in Kontakt 5/Options/normal to large and it seems to have created a conflict with Metro 7.2.4. and Metro wouldn't load. I then updated Kontakt to 5.4.2 and tossed Metro's Prefs. Metro loaded and I was able to open the file. So I tried resetting the font size in Kontakt to large and again Metro wouldn't open. So I reset the font size back to normal and tried to open the file but it would not open in Metro . It looks like the file is now corrupted. I can open other files including a back up of the corrupted file.
I tried to attach the file but I'm getting a message "The extension is not allowed".
Phil