[Solved] System.NullReferenceException: Object reference not set to an instance of an object Telerik Package from Nuget

[Jatin]

Hello all,
           I installed Telerik 2012.2.607.340 using the nuget package and installation went well. However when I tried to run I get the following exception on Line 1 below.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 1:  @(Html.Telerik().PanelBar()
Line 2:          .Name("tlkPanelBar")
Line 3:          .HtmlAttributes(new { style = "width: 180px; margin: 20px auto;" })

I am not sure why this null reference exception is being thrown. Here is the complete stack trace 

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.Mvc.Infrastructure.Implementation.ControllerAuthorization.IsAccessibleToUser(RequestContext requestContext, String controllerName, String actionName, RouteValueDictionary routeValues) +173
   Telerik.Web.Mvc.Infrastructure.Implementation.NavigationItemAuthorization.IsAccessibleToUser(RequestContext requestContext, INavigatable navigationItem) +290
   Telerik.Web.Mvc.UI.<>c__DisplayClass2`1.<IsAccessible>b__1(T item) +76
   System.Linq.Enumerable.Any(IEnumerable`1 source, Func`2 predicate) +151
   Telerik.Web.Mvc.UI.NavigatableExtensions.IsAccessible(IEnumerable`1 items, INavigationItemAuthorization authorization, ViewContext viewContext) +267
   Telerik.Web.Mvc.UI.NavigationItemContainerExtensions.WriteItem(TItem item, TComponent component, IHtmlNode parentTag, INavigationComponentHtmlBuilder`1 builder) +1282
   Telerik.Web.Mvc.UI.<>c__DisplayClass4.<WriteHtml>b__3(PanelBarItem item) +115
   Telerik.Web.Mvc.Extensions.EnumerableExtensions.Each(IEnumerable`1 instance, Action`1 action) +200
   Telerik.Web.Mvc.UI.PanelBar.WriteHtml(HtmlTextWriter writer) +438
   Telerik.Web.Mvc.UI.ViewComponentBase.ToHtmlString() +121
   Telerik.Web.Mvc.UI.ViewComponentBuilderBase`2.ToHtmlString() +56
   Telerik.Web.Mvc.{Dynamic}.PanelBarBuilder.IHtmlString.ToHtmlString() +31
   System.Web.HttpUtility.HtmlEncode(Object value) +38
   System.Web.WebPages.WebPageBase.Write(Object value) +64
   ASP._Page_Views_Home__LeftMenu_cshtml.Execute() in d:\Practice\ASP.NET\WdCalenderScheduler\WdCalenderScheduler\Views\Home\_LeftMenu.cshtml:1
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +207
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +88
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +220
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) +279
   System.Web.Mvc.Html.RenderPartialExtensions.RenderPartial(HtmlHelper htmlHelper, String partialViewName) +71
   ASP._Page_Views_Shared__Layout_cshtml.Execute() in d:\Practice\ASP.NET\WdCalenderScheduler\WdCalenderScheduler\Views\Shared\_Layout.cshtml:17
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +207
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +88
   System.Web.WebPages.<>c__DisplayClass7.<RenderPageCore>b__6(TextWriter writer) +102
   System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) +12
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +67
   System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +66
   System.Web.WebPages.WebPageBase.PopContext() +262
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +95
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +220
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +303
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +23
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +260
   System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +177
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
   System.Web.Mvc.Controller.ExecuteCore() +116
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8970061
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Any help please to resolve the above issue.

regards,
Nirvan.