System.ArgumentNullException: Value cannot be null. Parameter name: child at System.Web.UI.ControlCollection.Add(Control child) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(macro m, IDictionary`2 parameters, page umbracoPage) at ASP._Page_Views_Partials_TypedGrid_Editors_Macro_cshtml.Execute() in D:\Websites\SedgwickCountyOrgA\Views\Partials\TypedGrid\Editors\Macro.cshtml:line 14 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_TypedGrid_Editors_Base_cshtml.Execute() in D:\Websites\SedgwickCountyOrgA\Views\Partials\TypedGrid\Editors\Base.cshtml:line 16