title: ftrScanApi.dll reference could not be added
body: <p>I am trying to add <code>ftrScanApi.dll</code> reference into my window application but it gives me error of:</p>
  
  <blockquote>
    <p>"A reference to ... dll could not be added. Please make sure that the
    file is accessible, and that it is a valid assembly or COM component."</p>
  </blockquote>
  
  <p>I have tried all the help available online but couldn't fix the issue.</p>