You actually don't need locale emulator or anything like it to fix the save/load bug, the problem is the encoding of the save file itself. It's encoded in ANSI and either the game or western systems can't read that, I'm not a pro so I don't what's the exact problem with ANSI. I had the same problem a few times already, it's a common problem for games running on Clickteam Fusion. Here is how to fix it:
1. Open save.ini with Notepad/Editor
2. Delete everything inside the file
3. Go to File>Save as...
4. Change the encoding method to UTF-16 LE, you can do that on the left side of the "SAVE" button, see picture below
5. Now press the save button and you're done
Now you can save and also load your save.