Illegal Configuration: Compiling IB documents for earlier than iOS 7 is no longer supported
I recently updated to XCode 9. When I build the app it says "illegal configuration" for some storyboards in my pod files. I tried to recreate the storyboard files but it doesn't help.
![[1]](https://i.sstatic.net/fHjiM.png)
Solution
XCode 9 will not support storyboards that are built for iOS version less than 7.
Try changing the Builds for in File Inspector to a higher version then Clean and Build.
See screenshot
Edit: Important info from @user435779 below: Restart XCode if the errors don't go away.
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