Did you make any edits to /desktopmodules/userdefinedtable/datatypes.config?

Received the same error for each of these datatypes last night as well: String, Date, Time, Expression, Text/Html, URL.

I also received a few dozen of these, six at a time:

AssemblyVersion: 5.3.1
PortalID: 0
PortalName: SundayPaper.com
UserID: -1
UserName:
ActiveTabID: 36
ActiveTabName: Home
RawURL: /Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 710f03aa-5149-44f5-b18b-0c51be63f9e8
InnerException: The given key was not present in the dictionary.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.ThrowHelper.ThrowKeyNotFoundException
StackTrace:
Message: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.ThrowHelper.ThrowKeyNotFoundException() at System.Collections.Generic.Dictionary`2.get_Item(TKey key) at DotNetNuke.Modules.UserDefinedTable.DataType.get_ByName(String DataTypeName) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTableController.BuildMainDataSet(DataTable fieldsTable, IDataReader dr, Boolean RowMode) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTableController.GetDataSet(Boolean WithPreRenderedValues) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTableController.GetDataSet() at DotNetNuke.Modules.UserDefinedTable.List.get_DataSet() at DotNetNuke.Modules.UserDefinedTable.List.SearchManager.LoadColumns() at DotNetNuke.Modules.UserDefinedTable.List.SearchManager.SearchControl(SearchControlTypes ControlType) at DotNetNuke.Modules.UserDefinedTable.List.SearchManager.LoadControls() at DotNetNuke.Modules.UserDefinedTable.List.Page_Init(Object sender, EventArgs e)
Source:
Server Name: GENERIC86

I spotted an issue within the datatypes implementation and added a related workitem: http://dnnfnl.codeplex.com/WorkItem/V...