title: Android Studio - Emulator doesn't load my app
body: <p>I'm using android studio about 2 weeks and everything is going right until I try to create a new app and the android studio ask me for updates to API level 22 and I did it. After this update my emulator doesn't load my app anymore, the emulator opens but the app doesn't show up and even appears at emulator.</p>
  
  <p>Log:</p>
  
  <pre><code>Device Nexus_5_API_21_x86 [emulator-5554] is online, waiting for processes to start up..
  </code></pre>
  
  <p>I try to uninstall and install again the android studio but even reinstalling with API level 21 keep not working.</p>
  
  <p>Even the default Hello World application doesn't load and not show up at my emulator.</p>