title: Mac GameCenter for mac not working with sandboxing
body: <p>Mac</p>
  
  <p>Mac OS X 10.8.2  /  XCode 4.5.2  / Mac Pro </p>
  
  <p>I have 3 times rejected from apple review.
  Help me~ please</p>
  
  <p>DESCRIPTION OF PROBLEM</p>
  
  <p>I have problem GameCenter for mac.</p>
  
  <pre><code>Xcode -&gt; sandboxing enable .   GameCenter don't work
  
  Xcode -&gt; sandboxing disable.   GameCenter work
  </code></pre>
  
  <p>What to do?  How to work GameCenter with sandboxing?</p>
  
  <p>Error message below. </p>
  
  <pre><code>"CONNECTION INVALID"
  "Error Domain=NSCocoaErrorDomain Code=4099"
  </code></pre>
  
  <p>please help me</p>