I know how to uncorrupt your save file (if it doesnt work then it depends on how you corrupted it) But anyways this is how I corrupted it, I tried changing a texture so I could replace Neil with Null (with uabe), Then I opened it again but when I tried opening my save file, I made the biggest mistake of my life (It kept crashing everytime I opened it) But if this happens to you, Dont worry, Just uninstall it and reinstall it, But if you get a "Folder in Use" error, then shut down your device and then try deleting it and then reinstall it, And once you open your save file it should be fixed.