I have seen this error when you are running a bit low on space. I checked this download on my own device to double check and couldn't replicate the issue.
Welp. Let's just say that you didn't have to lose your saves. Next time,Go to the com.fixer(something like this) folder(the game one) and copy the save folder,paste somewhere else. Delete,install new version and open it. Copy your saves and paste it in the "saves folder". There you go,no need to lose them anymore. You can do this with almost every game here