Error message in Data Federation Admin tool

Hi All,

We are in BOBJ 4.1 SP04 Patch 08.

I am getting below error message while running Explain Query in Data Federation Administration tool.

The query is from a multisource universe combining BW and SAP ECC RFC.

Cannot explain query

org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.

Content is not allowed in prolog.

Thanks,

Jasil