Save Games Being Corrupt
 

After i save my game and exit out to go do something and come back to play the game, when i'm trying to load my saves it keeps saying that every save I have is corrupt. This is my favorite game but this literally makes it unplayable

This is not a game issue, so unfortunately not something we can directly fix, it's likely a problem with your system running a program that's interfering with OOTP being able to save the game.

A few things to do, turn off any unneeded programs running in the background at the same time you run OOTP. What other programs are running at the same time as OOTP on your system?

Make sure to check your hard drive for errors and also to defrag it regularly as well.

Make sure OOTP is whitelisted in any anti-virus programs or firewalls.

Any disk repair or optimization programs, set them to not automatically fix an issues with OOTP.

I Don't have anything running while playing OOTP but i do not know how to do any of that other stuff

Could the issue be that i have all of my OOTP 20 files in the D drive? I do this because my D drive is the only drive i have with storage available

In theory, you should be able to keep the files on any drive. But if the D drive has some corruption issues, or hasn't been defragged, for sure that could create this problem. So definitely you'll want to run defrag and disk checker on it and see what results you get back.