I am having problems updating my current project to use RIA services. I added all the necessary changes to web.config, but still no luck. I compile everything perfectly, but when I hit the page with a datacontext, I get an error. I was debugging with the help of a violinist, and I get 404 on one of the requests. I am returning the headers to my grid, so some kind of message happens, but the data doesn’t actually go through. One more note - my MVC launches Windows authentication. I also have clientaccesspolicy.xml.
Error in Silverlight with headers but no data

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[HttpException]: controller for track '/Services/EpicWeb-Services-LegacyDomainService.svc/binary' not found or not implemented by IController. in System.Web.Mvc.DefaultControllerFactory.GetControllerInstance (RequestContext requestContext, Type controllerType)
in System.Web.Mvc.DefaultControllerFactory.CreateController (RequestContext requestContext, String controllerName) in System.Web.Mvc.MvcConclonler) .Web.Mvc.MvcHandler.ProcessRequest (HttpContext httpContext) in System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest (HttpContext httpContext) in System.Web.HttpApplication.CallHendlerExecution.ecececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececececec () in System.Web.HttpApplication.ExecuteStep (IExecutionStep step, Boolean & completedSynchronously)