Please Check this Discussion http://qa.social.msdn.microsoft.com/Forums/en-GB/sharepointcustomization/thread/b55bfbf1-a56d-41c4-a0a4-5687a69c453e

Hi, I'm missing some of XMLS files when i restored sharepoint 2007 from CONTENT DB. Is there any way i can restore XML's or do i ask my users to manually upload this. This is an error that they reported The control type 'System.Web.UI.WebControls.XmlDataSource' is not allowed on this page. The type is not registered as safe. Regards.