I figured it out! So, for anyone having issues installing, this is what you do: Download both the program folder and the core files you want to use from the release link at the start of this thread. Then, you might notice the program won't open if you merge the resources folder from both rars. That's because the program expects something to be in the global folder that's inside resources and combining the folders in the rars doesn't put anything there. You need the files that are in the core rars to be in "global" instead of "fates" or "awakening", but that brings up another issue.
While the awakening files seem to work just fine from this point on, the fate ones don't. You might not be able to see a preview of your support. I don't know why this happens, but I know how to fix it. Not only do you need the files in "global", but you need the "fates" folder there in resources as well. Once the fates folder is there, you can open the program and change the Game Mode to Fates from the options menu at the top. Now, if you reload text, the preview shows up correctly!
I haven't tested it, but this will probably work if you but the awakening files in global and the fates folder next to it, but you may also need the awakening folder to freely swap between the games. It's a bit unorthodox, but it works.