xcode 9 crash when open storyboard

Question

XCode 9 GM Candidate 1 is currently crashing when opening a storyboard.

ProductBuildVersion: 9A235

UNCAUGHT EXCEPTION (NSInternalInconsistencyExcepti         


        

Answer 1

I found a solution for my case. It was crashing from the UITabBarViewController.

1. Open the storyboard as source code
2. Search for your UITabBarViewController
3. Remove the tab bar
4. Open storybard as Interface builder
5. Create new tab bar and connect the root view controllers you need

As Michele Schillaci said, you can try to remove some view controller and check if that solved the problem.