System.NullReferenceException: Object reference not set to an instance of an object.
   at ASP._Page_views_macropartials_layered_product_builder_renderer_cshtml.Execute() in f:\regulatormarine.com\Views\MacroPartials\Layered Product Builder Renderer.cshtml:line 20
   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 Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in f:\regulatormarine.com\Views\Partials\Grid\Editors\Base.cshtml:line 19