An Error Has Occured

System.NullReferenceException: Object reference not set to an instance of an object. at SitefinityWebApp.Mvc.Extensions.AdditionalDisclosureMVCExtensions.OddEvenThreeColumnRow(String& currentSwitch, String label, Guid val, List`1 items) in E:\iBeanz\Alteso\BitBucket\IBS.V.2\SitefinityWebApp\Mvc\Extensions\AdditionalDisclosureMVCExtensions.cs:line 142 at ASP._Page_MVC_Areas_InventoryWidgets_Views_Motorcycle_small_auction_InventoryDetails_cshtml.Execute() in c:\IIS Sites\Production\Mvc\Areas\InventoryWidgets\Views\Motorcycle\Small Auction\InventoryDetails.cshtml:line 162 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 ASP.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at ASP._Page_MVC_Areas_InventoryWidgets_Views_Aspite_Common_InventoryDetails_cshtml.Execute() in c:\IIS Sites\Production\Mvc\Areas\InventoryWidgets\Views\Aspite\Common\InventoryDetails.cshtml:line 231 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.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)