Xcode 4 Error: "the view outlet was not set"

Question

I'm starting to program using Xcode/iOS
I've been reading some books and tutorial... For my first application, I tried to do a "Hello World" I did the program following every single step in the right way, but when I run the application, the program crash... I read some posts to find the solution, but even when I check or do the steps that the posts suggest, I still have the same error. I tried to do another project, but the result is always the same. This the capture of my screen

Answer 1

Try to set your "View reference outlet to files owner" by dragging the link from "Views" to "File's Owner" in your nib. I think that's why you are getting the crash:

Answer 2

Change the Class of File Owner to your ViewController, Then set the View Outlet Again..!!

If it doesn't work, delete the view and drag a new one from Library. Set File Owner and View outlet again.