title: Click Handler has suddenly stopped working
body: <p>I have a script that is both published and been working for months that has suddenly stopped being able to find click handlers (no change to the code).</p>
  
  <p>IE. I get an error like this:</p>
  
  <p>Error encountered: Script function not found: interfaceClass.myClickHandler</p>
  
  <p>"interfaceClass.myClickHandler" does, in fact, exist and it is registered  </p>
  
  <pre><code>var indF = app.createCheckBox("Create individual files")
          .setName('create')
          .setId('createBox');
      var chandler = app.createServerHandler('interfaceClass.myClickHandler');
      indF.addClickHandler(chandler);
  </code></pre>
  
  <p>It also doesn't seem to be anything specific to this handler.  ALL click handlers are failing.  </p>
  
  <p>Given this was working, I'm almost positive this is a result of Google doing an update that broke our code (which they've done in the past).  But I need to know what they changed so I can work around it.  Does anyone know?</p>