title: .h file not found
body: <p>I'm working on an app in xcode 4 and everything was going great, then something odd just started happening. Every time I make a new class (any type of class, ViewController, NSObject, etc.) and import it in another .m file I get the error "className.h" file not found.</p>
  
  <p>The files are in the project and the code sense in xcode even supplies the name of the class when I am typing the #import statement. </p>
  
  <p>I quit xcode then cleaned the project and that did nothing. </p>
  
  <p>Any ideas, this is driving me crazy!</p>