I made the silly mistake of messing with an existing project for a few minutes using the new Xcode 8 beta before pushing the latest version to Githun, I didn't do much (tried out the new zoom levels / set the IB to use the iPad 9.7 size) but because of this I can no longer open the storyboard in Xcode 7.
Is there any solution to this? I'm assuming that apps made using the Xcode 8 beta cannot be uploaded so I need to be able to work in Xcode 7 again.