title: Session 'app' error while installing APK
body: <p>I am having difficulty importing a project written on Android Studio 1.1 into Android Studio 2.1.2. I keep getting this error whenever the gradle is building before testing the app on a tablet. Below is a screen shot of the error. Does anyone know what the problem could be?</p>
  
  <p>I have tried  adb kill-server followed by adb start-server as well as some other gradle versions compatible with the project. Other than this, I have not been able to find many more suggested solutions to the problem ("session 'app': error installing APK"). </p>
  
  <p>Additionally, I have tried uploading a basic Hello World project which successfully built the gradle.  </p>
  
  <p><strong>Error message from Grable Build</strong></p>
  
  <p><img src="https://i.stack.imgur.com/N3x50.png" alt="Initial Error Message"></p>
  
  <p><img src="https://i.stack.imgur.com/b2Rfn.png" alt="Second set of Errors"></p>