- Identify and fix common Objective-C / Xcode bugs
Q: When I run my app I see a black screen.
A: Make sure that theisInitialViewControllercheckbox is checked in your main storyboard
Q: My app is loading but my code isn't executing.
A: Make sure that the storyboard element is an instance of the correct class.
> Q: **My app is crashing with the error `unrecognized selector sent to instance`** > A: Something is attempting to call a method that doesn't exist, which will cause your application to crash. The console message will contain the `class` and the `method name` so it shouldn't be too tough to track down.
