title: Android app crashes after SDK-tools update version (NoClassDefFound, tool version 22)
body: <p>I have just updated my android SDK tools to the newly released version (tools version 22, platform tools version 17)</p>
  
  <pre><code>java.lang.NoClassDefFoundError
  </code></pre>
  
  <p>The .classpath file was modified. The update in added a line :</p>
  
  <pre><code>&lt;classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/&gt;
  </code></pre>
  
  <p>Before the SDK tools update, all my projects worked well !!</p>
  
  <p><strong>I corrected my problem in this way :</strong></p>
  
  <ul>
  <li>In the project properties (eclipse) -> java build path -> order and export make sure that all your jars in the libs folder are checked.</li>
  <li>And "Android Tools -> Fix Project Properties"</li>
  <li>And "Project -> Clean"</li>
  </ul>
  
  <p>But I don't understand why! Would anybody have an explanation ?</p>