Looks I ran into another error right now. For some odd reason, by mistake, I opened FF7Config.exe (pressed the wrong button in the folder), and then now I can no longer load the game through 7H.
When the game tries to load, it will just go like half the resolution with a black screen, and then gives me an error. I think the FF7Config.exe messed with the custom graphics driver -- now when I try to load FF7.exe, codec configs will appear on the bottom right of the screen, then the game will freeze. Any suggestions on how to fix without losing my saves/configs?
EDIT: Looks like I think I solved the problem but not 100% sure. I had to re-download Aali's custom driver for that registry file and re-activate it. I think FF7Config.exe deleted the registry or changed the registry again to use it's own custom driver?
Also, another general question -- if I have to re-install the game/7H/any other mod for whatever reason, do I simply just save the save00.ff7 file and replace it after the new install, or are there more files I would have to save? I wasn't sure if the mods themselves (in this case, 7H), would replace any other files that are important if I wanted to re-install and not lose any progress/etc.