System.InvalidCastException: Unable to cast object of type 'System.Xml.XmlDocument' to type 'System.Xml.XmlElement'.
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedContentCache.DetermineRouteById(UmbracoContext umbracoContext, Boolean preview, Int32 contentId)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedContentCache.GetRouteById(UmbracoContext umbracoContext, Boolean preview, Int32 contentId)
   at Umbraco.Web.Routing.DefaultUrlProvider.GetUrl(UmbracoContext umbracoContext, Int32 id, Uri current, UrlProviderMode mode)
   at Umbraco.Web.Routing.UrlProvider.<>c__DisplayClass16_0.<GetUrl>b__0(IUrlProvider provider)
   at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
   at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   at Umbraco.Web.Routing.UrlProvider.GetUrl(Int32 id, Uri current, UrlProviderMode mode)
   at Umbraco.Web.Templates.TemplateUtilities.ParseInternalLinks(String text, UrlProvider urlProvider)
   at Umbraco.Web.Templates.TemplateUtilities.ParseInternalLinks(String text)
   at ASP._Page_Views_Partials_grid_editors_rte_cshtml.Execute() in d:\wwwroot\IRM360\www\Views\Partials\Grid\Editors\Rte.cshtml:line 5
   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.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
   at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
   at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in d:\wwwroot\IRM360\www\Views\Partials\Grid\Editors\Base.cshtml:line 21