title: Glass Development Kit installed but not found by Android Studio
body: <p>I get a Gradle Sync error saying "Failed to set up SDK": Error: Module 'app': platform 'Google Inc.:Glass Development Kit Preview:19' not found. </p>
  
  <p>I have Glass Development Kit Preview from Android API 19 installed. My build.gradle(Module: app) is updated to reflect that: </p>
  
  <pre><code>compileSdkVersion 'Google Inc.:Glass Development Kit Preview:19'
  buildToolsVersion '25.0.0'
  </code></pre>
  
  <p>I've looked at similar problems and I seem to have my build.gradle set up properly. How can I get the Gradle Sync to recognize my GDK? </p>