Could you confirm that you are trying to use the reusable content's auto-update functionality in RadEditor WebPart? If this is the case you should know that the auto update functionality is available only in WCM scenario
(Using RadEditor in Web Content Management scenario
). In WebPart scenario you can use reusable content only as a template.
Regarding the product. RadControls for SharePoint (MOSS and 2010) come as a part of the RadControls for ASP.NET AJAX
package. So if your package (ultimate collection , premium collection ...) includes RadControls for ASP.NET AJAX
, it includes the SharePoint products as well.
the Telerik team