An unknown error occurred.

String "1800" is not a valid udi.<br /><br /><br /><br /> at Umbraco.Core.Udi.ParseInternal(String s, Boolean tryParse, Boolean knownTypes, Udi& udi) at Umbraco.Core.Udi.Parse(String s) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Umbraco.Web.PropertyEditors.ValueConverters.MediaPickerPropertyConverter.ConvertDataToSource(PublishedPropertyType propertyType, Object source, Boolean preview) at Archetype.Models.ArchetypePropertyModel.TryConvertWithPropertyValueConverters[T](Object value, IEnumerable`1 converters) at Archetype.Models.ArchetypePropertyModel.GetValue[T]() at Archetype.Models.ArchetypeFieldsetModel.GetValue[T](String propertyAlias) at Umbraco.Extensions.Models.Generated.GeneralWithSlider.<>c.<get_FeaturedPanel>b__1_0(ArchetypeFieldsetModel x) in D:\BitBucket\Clients\Glasgow Tourism And Visitors Plan\GMP\Umbraco.Extensions\Models\Generated\GeneralWithSlider.cs:line 28 at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) at Umbraco.Extensions.Models.Generated.GeneralWithSlider.get_FeaturedPanel() in D:\BitBucket\Clients\Glasgow Tourism And Visitors Plan\GMP\Umbraco.Extensions\Models\Generated\GeneralWithSlider.cs:line 26 at ASP._Page_Views_GeneralWithSlider_cshtml.Execute() in C:\inetpub\glasgowtourismandvisitorplan-prod-repository\GMP\GMP\Views\GeneralWithSlider.cshtml:line 30 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__DisplayClass3_1.<BeginInvokeAction>b__1(IAsyncResult asyncResult)