[oXygen-user] Error with DocBook XInclude

Hello. When I simply transform the existing DocBook XInclude example wit DocBook HTML I get the following error three times in Oxygen W No template matches xi:include in article. null and the output to my browser looks like Table of Contents Welcome to the Docbook Welcome to the Docbook <xi:include></xi:include><xi:include></xi:include><xi:include></xi: include> Am I missing something?