System.Web.HttpException (0x80004005): Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'. ---> System.FormatException: String was not recognized as a valid DateTime.
   at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.DictionaryPublishedContent.ParseDateTimeValue(String val)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.DictionaryPublishedContent.<>c__DisplayClass1_0.<.ctor>b__15(String val)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.DictionaryPublishedContent.ValidateAndSetProperty(IDictionary`2 valueDictionary, Action`1 setProperty, String[] potentialKeys)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.DictionaryPublishedContent..ctor(IDictionary`2 valueDictionary, Func`2 getParent, Func`3 getChildren, Func`3 getProperty, XPathNavigator nav, Boolean fromExamine)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.CreateFromCacheValues(CacheValues cacheValues)
   at Umbraco.Web.PublishedCache.ContextualPublishedCache`1.GetById(Boolean preview, Int32 contentId)
   at Umbraco.Web.PropertyEditors.ValueConverters.LegacyMediaPickerPropertyConverter.ConvertSourceToObject(PublishedPropertyType propertyType, Object source, Boolean preview)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.XmlPublishedProperty.get_Value()
   at Our.Umbraco.Ditto.UmbracoPropertyAttribute.GetUmbracoPropertyValue(IPublishedContent content, String umbracoPropertyName, Boolean recursive)
   at Our.Umbraco.Ditto.UmbracoPropertyAttribute.GetPropertyValue(IPublishedContent content, String umbracoPropertyName, Boolean recursive)
   at Our.Umbraco.Ditto.UmbracoPropertyAttribute.ProcessValue()
   at Our.Umbraco.Ditto.DittoCacheableAttribute.GetCacheItem[TOuputType](DittoCacheContext cacheContext, Func`1 refresher)
   at Our.Umbraco.Ditto.PublishedContentExtensions.DoGetProcessedValue(IPublishedContent content, PropertyInfo propertyInfo, IDittoContextAccessor contextAccessor, DittoProcessorContext baseProcessorContext, DittoChainContext chainContext)
   at Our.Umbraco.Ditto.PublishedContentExtensions.GetProcessedValue(IPublishedContent content, CultureInfo culture, Type targetType, PropertyInfo propertyInfo, Object instance, IDittoContextAccessor contextAccessor, DittoChainContext chainContext)
   at Our.Umbraco.Ditto.PublishedContentExtensions.ConvertContent(IPublishedContent content, Type type, IDittoContextAccessor contextAccessor, CultureInfo culture, Object instance, Action`1 onConverting, Action`1 onConverted, DittoChainContext chainContext)
   at Our.Umbraco.Ditto.PublishedContentExtensions.As(IPublishedContent content, Type type, CultureInfo culture, Object instance, IEnumerable`1 processorContexts, Action`1 onConverting, Action`1 onConverted, DittoChainContext chainContext)
   at Our.Umbraco.Ditto.PublishedContentExtensions.<>c__DisplayClass3_0.<As>b__0(IPublishedContent x)
   at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
   at System.Linq.Enumerable.<CastIterator>d__97`1.MoveNext()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at ASP._Page_Views_Custom_Modules_marketProductListingModule_cshtml.Execute() in c:\home\site\wwwroot\Views\Custom\Modules\MarketProductListingModule.cshtml:line 244
   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.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.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.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.<>c__DisplayClass4.<Wrap>b__3()
   at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap[TResult](Func`1 func)
   at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
   at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
   at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage)
   at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
   at System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter)
   at System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues)
   at Our.Umbraco.DocTypeGridEditor.Web.Extensions.HtmlHelperExtensions.RenderDocTypeGridEditorItem(HtmlHelper helper, IPublishedContent content, String editorAlias, String viewPath, String previewViewPath)
   at Pegasus.Web.Extensions.HtmlHelperExtensions.RenderDocTypeGridEditorItem(HtmlHelper helper, JObject model, Int32 pageId)
   at ASP._Page_Views_Custom_Partials_Grid_Editors_DocTypeGridEditor_cshtml.Execute() in c:\home\site\wwwroot\Views\Custom\Partials\Grid\Editors\DocTypeGridEditor.cshtml:line 17
   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_Custom_Partials_Grid_Editors_Base_cshtml.Execute() in c:\home\site\wwwroot\Views\Custom\Partials\Grid\Editors\Base.cshtml:line 25