Sorry to make all confused, i decide to re-install all form the start, just to make sur of my configuration, and this take same bug's that i have with same bundle. Now it is only one root : Control/UserBundle for the child user bundle. i confirm that FOSUserBundle works fine alone on this root, and the child user bundle (Control/UserBundle) work also. for the rest i will try later in the day. thank very must for your "patience".