Hello Leonid,

ELECT * FROM `bx_forum_discussions` WHERE 1 AND `bx_forum_discussions`.`status` ='active' AND `bx_forum_discussions`.`status_admin` ='active' AND `bx_forum_discussions`.`allow_view_to` IN(3,4) AND  MATCH(`bx_forum_discussions`.`title`, `bx_forum_discussions`.`text`) AGAINST ('rencontres')  LIMIT 0, 9 indeed returns an error.

I do not remember making a change to this field otherwise maybe the full editor. I do not know what position he is at the installation. But he's the same as here.