title: Please select at least one of the signature versions to use in Android Studio 2.3
body: <p>I have recently updated my Android Studio to version 2.3.3. When trying to Generate Signed APK I am getting the error message:</p>
  
  <blockquote>
    <p>Please select at least one of the signature versions to use</p>
  </blockquote>
  
  <p>There are two options: <strong>V1 (Jar Signature)</strong> and <strong>V2 (Full APK Signature)</strong>.
  I am not sure which one to choose. And what are the merits of choosing one over the other or choosing both?</p>
  
  <p>Thanks in advance for any advice.</p>