Applications are expected to have a root view controller at the end of application launch

Question

I get the following error in my console:

Applications are expected to have a root view controller at the end of application launch

Answer 1

This issue happens when you don't have Interface Builder set up correctly.

Ensure your App Delegate's window and viewController outlets are hooked up:

In your MainWindow.xib, hold control, click App Delegate and drag to the Window object. Select window. Hold control and select the App delegate again, drag to your root view controller and select viewController.