Thread:Extension talk:UserExport/Mediawiki 1.19

Hello, I have upgraded from MW 1.17 to 1.19. With 1.17, no pb, extension works fine. But with 1.19, I get this fatal error: Fatal error: Call to undefined method Xml::hidden in /homez.504(...)/extensions/userexport/userexport.body.php on line 46 Any ideas? Many thanks.