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Oh, and if it helps any, I noticed this strange file in my original install that isn't present in the new one. I wonder if this was the issue? .gitignore
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DIT: Though after testing it, the new install still loads even with that file in the folder. Weird! Well, it works now, so that's good. I can't help but be curious about what was causing the issue before though.

Alright, I fixed it. After completely uninstalling the game and then using CCleaner to delete any registry entries (just to be safe, not sure if that was necessary) and then doing a completely fresh install, loading works properly. I can even load my old save files after transferring them back. Thank you for all of your help with this!

This is bizarre, I wonder what could be causing the issue. Here's the install folder zipped, as requested: 
EDIT: Or maybe not. I'm trying to attach the file, but after a while the window for it closes and nothing is attached.

Creating other saves works, but loading them doesn't. I even tried it again just now, and loading still does nothing. output_log.txt

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DIT: In my save folder, they all have .meta files to go along with the saves. If it helps, here's the save I just tried: 3 the breach_20170621132618 and it's meta file 3 the breach_20170621132618.meta