I use the Export feature in RadGrids on many pages to export Excel, MSWord and PDF documents. It works on all but one page. The culprit throws the PageRequestManagerParserErrorException when Visual Studio is in Debug mode. Furthermore, if I try to export an Excel document, Fiddler shows that the response header’s Content-Type is “text/plain; charset=utf-8” instead of “application/vnd.ms-excel;”, and the WebView and Raw view is gobble-de-gook. Please help.