This issue happens when onedrive is half installed, here is the message from the tmodloader discord about this: "If you haven't already, enable/install OneDrive. Right click your documents folder and select "Always save on this device". It might say "computer" instead of "device" or just "save on device". Now try. Note that this fix is for Windows 10 only"I know you probably don't care that much since its on the old tmodloader (1.3)