I just created a new iPhone app project in Xcode 5, and set the iOS Deployment Target to 5.0. I tried to run the app in the iOS 5.1 simulator, but I got the following error: Could not find a storyboard named ‘Main’ in bundle NSBundle When I clicked on the project file, then on Build Rules, then Copy Bundle Resources, I saw that Main.storyboard showed up in red, so that would explain why it wasn’t