title: Eclipse: Failed to get the required ADT version number from the SDK
body: <p>I tried to set up a new eclipse installation including the android sdk and adt plugin.
  The installation of all parts complete without errors.
  After setting the sdk path withing eclipse this error showed up:</p>
  
  <p><code>Failed to get the required ADT version number from the SDK.
  The Android Developer Toolkit may not work properly.</code></p>
  
  <p>This shows up every time I start eclipse.
  I didn't found a solution yet for fixing this error and I don't yet have a clue where this error comes from.</p>
  
  <p>Further system information:</p>
  
  <p>OS: Xubuntu 14.04<br>
  Eclipse Helios<br>
  Android SDK Tools: Rev. 23.0.2<br>
  Android SDK Build Tools: Rev. 20</p>