title: Why does my WatchKit extension cause a "Waiting to attach" message on an actual Apple Watch but not in a simulator?
body: <p>I have a published iOS app and am trying to add a <code>WatchKit</code> extension for it. </p>
  
  <p>For now, all I have is a watch <code>interface.storyboard</code> with a single <code>label</code> just to verify the entire building process. The app runs fine on the <em>simulator (iPhone 6 (8.3)) and the Watch simulator</em>. </p>
  
  <p>When I run it on the iPhone and Apple Watch, it runs on the iPhone, installs on the Apple Watch, but then just displays a wait status when trying to run it on the Apple Watch. </p>
  
  <p>The error in Xcode says <strong>"Waiting to attach"</strong>, and when I try to attach it via <code>Xcode &gt; Debug &gt; Attach to Process</code>, it says <strong>"Lost connection to iPhone"</strong>. </p>
  
  <p>I am using Xcode 6.3.1.</p>