Board Thread:Shadow Fight 2 Discussion/@comment-39.57.20.148-20180928114754/@comment-25669516-20180928131626

We've had several threads with people running into this error and it seems the most common cause is intentional or unintentional modification of the player data. There doesn't seem to be a 100% working solution for this but while you wait for another member to respond with some suggestions, you can start by emailing Nekki's Customer Support regarding your issue. Fill out the form found under the "contact us" option on this page -

Shadow Fight 2 Support