[POSSIBLE FIX] tModLoader Crashes when Saving & Exiting.

Overview

I’m not sure if this will fix the problem for you but it worked for me and some others, if this didn’t work for you then feel free to play around with your files, just be careful.

The First Steps And Final Steps.

Click “Documents” > “My Games” > “Terraria” > “ModLoader” > “Worlds” > “Backups”
Click the world that you wanna fix, make sure you click the cloud folder.
Copy the 2 files that are in that zip / winrar folder to your desktop.
Then drag those 2 files into “My Games” > “Terraria” > “ModLoader” > “Worlds”

If this did not work then check your mod config folder, something may be messing with your files y’know.