Yeah, i noticed that too. the sample is a bit old, and it turns out Xcode dropped support for storyboards marked as supporting iOS 6 or older. I’ll fix the sample before we publish its but ia some thats not a showstopper for you getting started, right?
i can end you a newer version of the sample tomorrow, when it’s done. In the mean time, just do “Edit in Xcode” on the Main.storyboard, and in the pane on the right change the “Builds for” setting from “unknown iOS version” to a valid version, to fix the Xcode error.
yeah, that too is caused by newer SDKs getting more stricter there.