The Insert Web Part tool in RadEditor for SP 2010 throws JavaScript error (reproducible in all browsers). Steps to reproduce: 1. Open http://sharepoint.telerik.com/aspnet-ajax/web-parts/Pages/Content-Editor-Web-Part-using-RadEditor.aspx 2. Click over the content of the Editor, so the toolbar will be shown 3. Click over the Insert Web Part Tool video - http://screencast.com/t/Df3aV6svUy