title: not a sibling in the same RelativeLayout?
body: <p>Hello I am starting with Android developing. I am just modifying with Android Studio an open source example. </p>
  
  <p>I have only modified string.xml and some .png files. In the Android simulator it works perfect but when I try to generate the signed Apk file I receive two errors with similar description. </p>
  
  <p>This is one of them (the line is marking with *):</p>
  
  <blockquote>
    <p>Error:(33) Error: @id/linear_adview is not a sibling in the same
    RelativeLayout [Not Sibling]</p>
  </blockquote>