title: android Proguard "failed to create task or type proguard"
body: <p>I'm following this tutorial to make an obfuscating proguard for my project:
  <a href="http://android-developers.blogspot.com/2010/09/proguard-android-and-licensing-server.html?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed%3A+blogspot%2FhsDu+%28Android+Developers+Blog%29" rel="nofollow">http://android-developers.blogspot.com/2010/09/proguard-android-and-licensing-server.html?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed%3A+blogspot%2FhsDu+%28Android+Developers+Blog%29</a></p>
  
  <p>But when I want to execute "ant release" at the last part, it turns error like this:</p>
  
  <pre><code>-dex-obfuscate:
   [taskdef] Could not load definitions from resource proguard/ant/task.properties. It    could not be found.
   [delete] Deleting: /home/drikvi/workspace/SuitAuto/obf/original.jar
    [jar] Building jar: /home/drikvi/workspace/SuitAuto/obf/original.jar
  
   BUILD FAILED
   /home/drikvi/workspace/SuitAuto/add-proguard-release.xml:35: Problem: failed   to            create    task or type proguard
   Cause: The name is undefined.
   Action: Check the spelling.
   Action: Check that any custom tasks/types have been declared.
   Action: Check that any &lt;presetdef&gt;/&lt;macrodef&gt; declarations have taken place.
  </code></pre>
  
  <p>and also, where can I find the proguard installation directory?</p>
  
  <p>Thanks!</p>