BTW - The same thing happens when I try to run the sample project on your website at -
http://www.telerik.com/blogs/radgrid-for-asp-net-ajax-client-side-databinding-to-odata-services
Download the file @ http://www.telerik.com/docs/default-source/blogs-docs/gridodatabinding-zip
I see the data coming to my browser (JSON) but the grid does not show any data. Attached the screenshots for your reference.