title: Xcode 9.3.1 components list empty, can't download iOS 10 simulators
body: <p>I am running Xcode 9.3.1 (9E501) and my Components list is empty, preventing me from downloading iOS 10 simulators.</p>
  
  <p>I have tried:</p>
  
  <ul>
  <li>Deleting the following locations and re-installing Xcode:</li>
  </ul>
  
  <p>/Applications/Xcode.app</p>
  
  <p>/Library/Preferences/com.apple.dt.Xcode.plist</p>
  
  <p>~/Library/Preferences/com.apple.dt.Xcode.plist</p>
  
  <p>~/Library/Caches/com.apple.dt.Xcode</p>
  
  <p>~/Library/Application\ Support/Xcode</p>
  
  <p>~/Library/Developer/</p>
  
  <ul>
  <li><p>Manually deleting all my iOS simulators</p></li>
  <li><p>Nothing I tried seems to work.  I am running a non-admin user and installed Xcode using the admin user, if that makes any difference. Project is universal, deployment target is 10.3 (don't think that should matter).</p></li>
  </ul>
  
  <p><a href="https://i.stack.imgur.com/xowJV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/xowJV.png" alt="Empty components list"></a></p>