[Bug 1525] New: XML is Validated by XHTML Validator, but Invalid by CSS Validator

http://www.w3.org/Bugs/Public/show_bug.cgi?id=1525

           Summary: XML is Validated by XHTML Validator, but Invalid by CSS
                    Validator
           Product: CSSValidator
           Version: CSS Validator
          Platform: PC
               URL: http://www.bengkelprogram.com/
        OS/Version: Windows 98
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XHTML1.0
        AssignedTo: ot@w3.org
        ReportedBy: aryo.sanjaya@gmail.com
         QAContact: www-validator-cvs@w3.org


I have validate my site by http://validator.w3.org/check?uri=referer, and the
result is Valid XHTML 1.0 Transitional!
But when checked by http://jigsaw.w3.org/css-validator/check/referer, it is say:
Please, validate your XML document first!

Line 1

Column 165

Element type "null" must be followed by either attribute specifications, ">" or
"/>".