title: When I load ADT why do I receive the error "The Android SDK requires Android Developer Toolkit version XX.X.X or above?"
body: <p>I just updated my Android SDK Tools to version 21.1. Unfortunately this is causing an error when I load the Android Developer Toolkit:</p>
  
  <blockquote>
    <p>The Android SDK requires Android Developer Toolkit version 21.1.0 or above.</p>
    
    <p>Current version is 21.0.1.2012-12-6-2-58.</p>
    
    <p>Please update ADT to the latest version.</p>
  </blockquote>
  
  <p>When I upgraded the SDK I was warned that I might need to upgrade ADT. I tried to do so by going to Help > Check for Updates. Unfortunately this returns a message that "No updates were found."</p>
  
  <p>In case I've missed something here's a screenshot of my Android SDK Manager:</p>
  
  <p><img src="https://i.stack.imgur.com/UEjyt.png" alt="Android SDK Manager"></p>
  
  <p>Am I missing an install package? Do I need to go about updating ADT (Eclipse) another way? Should I just download a new copy of ADT?</p>