title: GMail Contextual Gadget not working
body: <p>I'm trying to deploy a contextual gadget in my domain.
  I have followed the development guides but the gadget does not show up.
  I think that the problem is about "Data access": event if the installation seems to go smooth, 
  in the Google Apps console the data access section of the gadget shows a red X. 
  If I try to grant access by pressing the specific link, nothing happens and a blank page appears.
  I am using a superadmin user.</p>
  
  <p>I have tried in two different domains with no success.</p>
  
  <p>Here the is manifest:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" ?&gt;
  &lt;ApplicationManifest xmlns="http://schemas.google.com/ApplicationManifest/2009"&gt;
  
    &lt;Name&gt;My Gadget&lt;/Name&gt;
  
    &lt;Description&gt;
      Sample Gadget  
    &lt;/Description&gt;
  
    &lt;Extension id="SinesyExtractor" type="contextExtractor"&gt;
      &lt;Name&gt;My Stuff&lt;/Name&gt;
      &lt;Url&gt;google.com:EmailBodyExtractor&lt;/Url&gt;
      &lt;Triggers ref="MyGadget"/&gt;
      &lt;Scope ref="emailBody"/&gt;
      &lt;Container name="mail"/&gt;
    &lt;/Extension&gt;
  
    &lt;Extension id="MyGadget" type="gadget"&gt;
      &lt;Name&gt;Gmail contextual gadget&lt;/Name&gt;
      &lt;Url&gt;http://download.XXXXXX.it:8080/download/gmail/XXXXXX.xml&lt;/Url&gt;
      &lt;Container name="mail"/&gt;
    &lt;/Extension&gt;
  
    &lt;Scope id="emailBody"&gt;
      &lt;Url&gt;tag:google.com,2010:auth/contextual/extractor/BODY&lt;/Url&gt;
      &lt;Reason&gt;
        This application searches the message body of each email for text related to Add-in Express products.
      &lt;/Reason&gt;
    &lt;/Scope&gt;
  
  &lt;/ApplicationManifest&gt;
  </code></pre>
  
  <p>Have you a suggestion or a link to a guide I can follow?</p>
  
  <p>Thanks,
  Lorenzo</p>