Server Error in '/' Application.

Object reference not set to an instance of an object.

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 256:                                <div class="category-navigation" id="divCategoryMenu" runat="server">
Line 257:                                    <div class="title">
Line 258:                                        <a href="<%=Page.ResolveUrl(PageMap.Category.Base) %>">Categories</a>
Line 259:                                    </div>
Line 260:                                    <div class="clear">

Source File: c:\websites\RevoHobbies\MasterPage.Master    Line: 258

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.UI.ControlItem.get_Index() +51
   Telerik.Web.UI.RadPanelItem.get_IsFirstVisibleItem() +16
   Telerik.Web.UI.RadPanelItem.DetermineCssClass() +30
   Telerik.Web.UI.RadPanelItem.AddAttributesToRender(HtmlTextWriter writer) +12
   System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer) +30
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +30
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   Telerik.Web.UI.RadPanelBar.RenderItems(HtmlTextWriter writer) +171
   Telerik.Web.UI.RadPanelBar.RenderContents(HtmlTextWriter writer) +206
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +49
   Telerik.Web.UI.RadDataBoundControl.Render(HtmlTextWriter writer) +93
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   ASP.masterpage_master.__RenderdivCategoryMenu(HtmlTextWriter __w, Control parameterContainer) in c:\websites\RevoHobbies\MasterPage.Master:258
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +275
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +168
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   ASP.masterpage_master.__RenderaspnetForm(HtmlTextWriter __w, Control parameterContainer) in c:\websites\RevoHobbies\MasterPage.Master:174
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +275
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +11662590
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +52
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +168
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +168
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page) +979
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +275
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4238


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0