Form Result Image Not Display

Please, manually add the following line to your Web.config handlers and httpHandlers section if they don't exists

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    ...
 <system.web>
 ...
    <httpHandlers>
        <add path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral" validate="false" />
    </httpHandlers>
  </system.web>
  ....
  <system.webServer>
    <handlers>
        <add name="ChartHandler" path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI" />
    </handlers>
  </system.webServer>
  ....
</configuration>