title: Installing of Adobe Air file fails with "file damaged"
body: <p>Adobe Air brings following exception:</p>
  
  <blockquote>
    <p>The application could not be installed because the AIR file is
    damaged. Try obtaining a new AIR file from the application author.</p>
  </blockquote>
  
  <p>Please add the different reasons which may lead to this error.</p>