Iphone story board not showing properly on device

Question

Hi i developed my application but the current storyboard is not showing properly when i test in on the iphone. Also the storyboard icon is shown as grey when i select it what does it means??? Here is a screenshot.

Answer 1

I deleted all the folder Library->Developer->Xcode->DerivedLibrary then cleaned the project and after that the app run perfectly in my device.