IDOC XML to Flat conversion - IDOC_ERROR_PARSE_FAILURE

Hi experts,

    We are trying to convert the standard IDOC-XML to Flat using William Li's weblog

http://scn.sap.com/community/pi-and-soa-middleware/blog/2009/04/01/how-to-use-user-module-for-conversion-of-idoc-messages-between-flat-and-xml-formats

1) Created the RFC destination in NWA to SAP system.

2) Created connection factory

3) Included the Adapter Modules in the Receiver File adapter. (The scenario is IDOC to File - no mapping).

However, when i tried to test, i get the following error:

Adapter Framework caught exception: (7) IDOC_ERROR_PARSE_FAILURE: The metadata for the parsed IDoc was not available. See cause exception for details. : state=READING_ENDTAG, charPosition=0, lineNumber=0, columnNumber=0

Delivering the message to the application using connection File_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: com.sap.conn.idoc.IDocParseException: (7) IDOC_ERROR_PARSE_FAILURE: The metadata for the parsed IDoc was not available. See cause exception for details. : state=READING_ENDTAG, charPosition=0, lineNumber=0, columnNumber=0.

Can someone help me?

Best Regards,

Ravikanth Talagana