When it comes to SharePoint 2010 we always recommend using the specially designed RadEditor for SharePoint 2010, instead of the regular RadEditor for ASP.NET AJAX.
In order to use it, install the RadEditor for SharePoint 2010: http://www.telerik.com/help/aspnet-ajax/moss-installing_radeditor__radgrid_web_parts_on_sharepoint_2010.html
. Then in you custom web solution you can use the SPRadEditor class
, which is defined in the Telerik.SharePoint namespace
of the RadEditorSharePoint
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed