Topic: Uncaught TypeError: $(...).plupload is not a function

I keep getting that error.  I've researched this board, but don't see a clear solution.  Here is my code
<html>
<head>
  <title>PLUpload</title>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    <script src="/js/plupload/plupload.full.min.js"></script>
  <script type="text/javascript" src="/js/main.js"></script>
</head>
<body>
<div id="uploader">
  Does not support
</div>
</body>
</html>

/* In main.js */
$(document).ready(function(){
  var uploader = $("#uploader").plupload('getUploader');
})