title: An error occurred during client rendering
body: <p>I have a report which works without problems. I created a new version of that report with two levels of grouping, which works perfectly in Visual Studio. I deployed it to the server (in SharePoint integration mode). The report runs for a while (displaying the spinner) and then I get the error: </p>
  
  <blockquote>
    <p>An error occurred during client rendering</p>
  </blockquote>
  
  <p>So it appears to collate the data but chokes when trying to render it. </p>
  
  <p>I can render the report from the server directly to PDF and Excel and that renders correctly. It is just when it tries to render in the browser that it doesn't render. </p>
  
  <p>The Reporting Services log simply shows that it processed the report and doesn't have any errors.</p>
  
  <p>Has anyone got any clues to what might cause this?</p>