Hi, I started using Xcode about a week ago and I'm working on an iPhone App for my school. So, I used the tabbed application template Apple provided. So on one of my view controllers I have a button that I want to transition to another View Controller when clicked. So, I Ctrl + Dragged and selected the other View Controller and I chose a Push segue. Now, when I run the app in the iOS Simulator and I click it I receive the following error: return UIApplicationMain(argc, argv, nil, NSStringFromClass([CGHSAppDelegate class])); I have seen other similar threads on it but none seem to be a fix to my problem. Thanks!