%0D%0AError [65]: "document type does not allow element X here; missing one of Y start-tag"%0D%0ANOTE: Whenever possible, give the address of the document you were checking.

I had that error report on one of my sites that is using Xiti.  That error is in the code they are giving us to put on every pages.  I'll try to reach them so they'll know that their code doesn't pass validation.
See ya.