title: Passing address of non-local object to __autoreleasing parameter for write-back
body: <p>I'm trying to make app with xcode 4.2 and i'm really confused whay happen this.
  Could someone help me an explain me why have error in lines when appear &amp;error</p>
  
  <p>Passing address of non-local object to __autoreleasing parameter for write-back</p>
  
  <p><a href="http://pastie.org/2938106" rel="nofollow">RootViewController.h</a></p>
  
  <p><a href="http://pastie.org/2938098" rel="nofollow">RootViewController.m</a></p>