I'm planning to release the update tomorrow if I can, so I would just download that and see if it fixes whatever the problem may be.
One person did have trouble with their file in Astana City, but it wasn't giving them a corrupted file. Hopefully the update will fix it for you.
I mean it's a really fun game. Honestly, I'll wait and try to just replay up to where I was haha. I'm a little peeved, but if you think there is a fix I'll try it.
Side note: I wanted to use Mamoswine on my team (Right before my file corrupted my Swinub evolved into Pilo). Where can we get heart scales, so I can re-teach it Ancient Power/did you make it a TM I could get somewhere?