In Host > Site Management there is a grey pencil for SITE ID = 0 TITLE = "Dutch Art - Gallery" usually this means one cannot edit (pencil must be black). When one clicks the grey pencil an error is thrown: 

A critical error has occurred.close

AssemblyVersion:7.3.1

PortalID:0

PortalName:Dutch Art - Gallery

UserID:1

UserName:host

ActiveTabID:17

ActiveTabName:Site Management

RawURL:/Host/Site-Management/ctl/Edit/mid/321/pid/0/portalid/0?popUp=true

AbsoluteURL:/Default.aspx

AbsoluteURLReferrer:http://www.hollandart.gallery/Host/Site-Management/portalid/0

UserAgent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:e33c3761-4cc0-47e5-b7bc-22e1dd4f08f7

InnerException:Selection out of range Parameter name: value

FileName:

FileLineNumber:0

FileColumnNumber:0

Method:Telerik.Web.UI.RadComboBox.PerformDataBinding

StackTrace:

Message:

DotNetNuke.Services.Exceptions.PageLoadException: Selection out of range

Parameter name: value ---> System.ArgumentOutOfRangeException: Selection out of range

Parameter name: value

   at Telerik.Web.UI.RadComboBox.PerformDataBinding(IEnumerable dataSource)

   at Telerik.Web.UI.RadComboBox.OnDataSourceViewSelectCallback(IEnumerable data)

   at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback)

   at Telerik.Web.UI.RadComboBox.OnDataBinding(EventArgs e)

   at Telerik.Web.UI.RadComboBox.PerformSelect()

   at System.Web.UI.WebControls.BaseDataBoundControl.DataBind()

   at Telerik.Web.UI.RadComboBox.DataBind()

   at DotNetNuke.Web.UI.WebControls.DnnSkinComboBox. (EventArgs e)

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Control.LoadRecursive()

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   --- End of inner exception stack trace ---

Source:

Server Name: strawberry

Thanks Man! (I needed it to do with an SQL Update Query in SQL Studio Management 2008, by the way, "edit top 200 rows" did not work from the GUI, because database was on SQL Server 2012, Studio already outdated). But the setting was indeed in that Table, as you said, wrong setting almost gone in Google search results, completely gone can take a couple of weeks