title: Android studio - Failed to find target android-18
body: <p>I have a problem with Android Studio 0.2.3.</p>
  
  <p>When I run my project the build stops and appears message that says:</p>
  
  <blockquote>
    <p>Gradle: Execution failed for task ':<em>AppName</em>:compileDebugAidl'.<br/>
    > failed to find target android-18</p>
  </blockquote>
  
  <p>although I have installed the SDK platform of Android 4.3 (API 18) and I tried to reinstall all the SDK. I've also added the <code>ANDROID_HOME</code> variable in the system variables.</p>
  
  <p>What seems to be the source of this error?</p>