title: Cannot install Watch app
body: <p>When trying to test a Watch app on the Watch, in XCode I get the following warning</p>
  
  <blockquote>
    <p>Watch App xcodeproj TARGETED_DEVICE_FAMILY contains a value incompatible
    with the target type.</p>
  </blockquote>
  
  <p><img src="https://i.stack.imgur.com/Wd4NK.png" alt="enter image description here"></p>
  
  <p>Looking at the Device logs, it says: </p>
  
  <pre><code>(Error) WatchKit: validateWatchKitApplicationInfoDictionary, invalid UIDeviceFamily value
  </code></pre>
  
  <p>What am I missing?</p>