RadBinaryImage MapPageRoute not working

Under ASP.NET 4.0, when using System.Web.Routing (URL Routing) with telerik controls I received broken images.

void RegisterRoutes(System.Web.Routing.RouteCollection routes)

{

//make sure this is first

routes.Add(new System.Web.Routing.Route("{resource}.axd/{*pathInfo}", new System.Web.Routing.StopRoutingHandler()));

//...other routes here

}

found the answer here:

http://www.telerik.com/community/forums/aspnet-ajax/ajax/system-web-routing-and-asp-net-ajax-client-side-framework-failed-to-load.aspx

Deploying ASP.NET 4 Web Forms Application Using Routing on IIS 6

In IIS 6, opened the properties dialog of the virtual directory, went to the "Directory" tab, click the "Configuration" button, and added a Wildcard application map to the aspnet_isapi.dll (c:\windows\microsoft.net\framework\v4.0.30319\aspnet_isapi.dll) and unchecked the "Verify that file exists" checkbox. This made it work.

Found the answer here: http://stackoverflow.com/questions/2953713/deploying-asp-net-4-web-forms-application-using-routing-on-iis-6