title: Android Studio: execution failed for task : app:compileDebugAidl FAILED
body: <p>I installed Android Studio 1.2.1.1, with Gradle version 2.2.1, and Android plugin version 1.2.3. I tried to create a simple hello world project, and it give me a build failure of :app:compileDebugAidl FAILED. Am i missing something or have some incompatible issue with version, as this should be a simple application. Thanks for any help.</p>
  
  <p>This is the compilation errors I am getting:</p>
  
  <pre><code>Information:Gradle tasks [:app:assembleDebug]
  :app:preBuild UP-TO-DATE
  :app:preDebugBuild UP-TO-DATE
  :app:checkDebugManifest
  :app:preReleaseBuild UP-TO-DATE
  :app:prepareComAndroidSupportAppcompatV72220Library UP-TO-DATE
  :app:prepareComAndroidSupportSupportV42220Library UP-TO-DATE
  :app:prepareDebugDependencies
  :app:compileDebugAidl FAILED
  Error:Execution failed for task ':app:compileDebugAidl'.
  &gt; aidl is missing
  Information:BUILD FAILED
  </code></pre>