title: "No cached version... available for offline mode."
body: <p>I received an error message while building a new Hello World project in Android Studio:</p>
  
  <pre class="lang-none prettyprint-override"><code>FAILURE: Build failed with an exception.
  
  * What went wrong:
  A problem occurred configuring root project 'MyApplication2'.
  &gt; Could not resolve all dependencies for configuration ':classpath'.
     &gt; Could not resolve com.android.tools.build:gradle:0.9.1.
       Required by:
           :MyApplication2:unspecified
        &gt; No cached version of com.android.tools.build:gradle:0.9.1 available for offline mode.
  
  BUILD FAILED
  </code></pre>
  
  <p>Android Studio version: 0.5.2</p>
  
  <p>Gradle version: 0.9.1</p>
  
  <p>I'm using a proxy connection to Internet.</p>