My iPhone 5 has had Terraria on it for around three years now. My main world, which has always been fine before a few months ago, refuses to load. My other worlds work for a few minutes, then crash the app. I have tried consistently updating the software, clearing up space, deleting my other worlds and characters that I longer use. I don't think it has anything to do with the 'Everyplay SDK. This build has expired, please upgrade' error. Please tell me what to do next.