Kendo UI MVC helper not working after I add SignalR to project

[Scott]

I have been using Kendo UI controls such as menu and grid in my current project.  I wanted to add some additional real time functionality using SignalR.  However, after I add the following code to my Global.asax.cs file, which enables routing for SignalR, I get run-time errors on my Kendo UI markup.  I hope someone can help, as I am stumped and have spent a ton of time on this already.

Here is the code that I add to my Global.asax.cs in the Application_Start():
RouteTable.Routes.MapHubs();

Here is my markup for the first Kendo UI menu control in my _Layout.cshtml file, which works fine until I add the line above:
@(Html.Kendo().Menu()
      .Name("topLevelMenu")
      .Items(items =>
          {
              items.Add().Text("CRM").Action("Index", "Crm").ImageUrl("~/Images/group.png").LinkHtmlAttributes(new {id = "btnCrm"});
              items.Add().Text("Accounting").Action("Index", "Accounting").ImageUrl("~/Images/coins.png");
              items.Add().Text("Inventory").Action("Index", "Inventory").ImageUrl("~/Images/table.png");
              items.Add().Text("Daily Service").Action("RepairOrdersCalendar", "DailyService").ImageUrl("~/Images/calendar.png");
          })
)

The error I get is a NotImplementedException.  Here is the stack trace:
   at System.Web.HttpRequestBase.get_CurrentExecutionFilePath()
   at Microsoft.Owin.Host.SystemWeb.OwinRoute.GetRouteData(HttpContextBase httpContext)
   at System.Web.Routing.RouteCollection.GetRouteData(HttpContextBase httpContext)
   at Kendo.Mvc.Infrastructure.Implementation.AuthorizationContextCache.GetAuthorizationContext(RequestContext request, String controllerName, String actionName, RouteValueDictionary routeValues)
   at Kendo.Mvc.Infrastructure.Implementation.ControllerAuthorization.IsAccessibleToUser(RequestContext requestContext, String controllerName, String actionName, RouteValueDictionary routeValues)
   at Kendo.Mvc.Infrastructure.Implementation.NavigationItemAuthorization.IsAccessibleToUser(RequestContext requestContext, INavigatable navigationItem)
   at Kendo.Mvc.UI.NavigationItemContainerExtensions.WriteItem[TComponent,TItem](TItem item, TComponent component, IHtmlNode parentTag, INavigationComponentHtmlBuilder`1 builder)
   at Kendo.Mvc.UI.Menu.<WriteHtml>c__AnonStorey73.<>m__21C(MenuItem item)
   at Kendo.Mvc.Extensions.EnumerableExtensions.Each[T](IEnumerable`1 instance, Action`1 action)
   at Kendo.Mvc.UI.Menu.WriteHtml(HtmlTextWriter writer)
   at Kendo.Mvc.UI.WidgetBase.ToHtmlString()
   at Kendo.Mvc.UI.Fluent.WidgetBuilderBase`2.ToHtmlString()
   at System.Web.WebPages.WebPageExecutingBase.WriteTo(TextWriter writer, Object content)
   at ASP._Page_Views_Shared__Layout_cshtml.Execute() in c:\Development\TrishullaErp\Trishulla.Erp.Web.Core.Main\Views\Shared\_Layout.cshtml:line 57
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.WebPages.WebPageBase.Write(HelperResult result)
   at System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body)
   at System.Web.WebPages.WebPageBase.PopContext()
   at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17()
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)

[Atanas Korchev]

Hi Scott,

 The stacktrace tells that SignalR invokes via GetRouteData
the CurrentExecutionFilePath property of the HttpRequestBase class which always throws NotImplementedException. The menu invokes GetRouteData to perform security trimming. We can't explain the behavior of SingnalrR. You can however disable security trimming of the menu to avoid this code to be invoked:

@(Html.Kendo().Menu()
              .SecurityTrimming(false)
   )

Regards,
Atanas Korchev
the Telerik team