Thread:Extension talk:Automatic Board Welcome/Extension doesn't work

Hi all, I have on my wiki the social profile extension with all of its features, and tried to add this extension. install is ok, and I wrote some text in MediaWiki:User-board-welcome-message, but when I create user, it doesn't show on the board. any ideas? My wiki is in Hebrew MediaWiki	1.18.1 PHP	5.2.9 (apache) MySQL	5.0.67-log

thanks, Asaf