FB.login() called before calling FB.init().

Hi,

Ultimate Facebook is not working :
when I click on "Login with Facebook", nothing happens.
I looked what Chrome said and here it is. Each time I click on the "Login with Facebook" button, I get these messages :
FB.login() called before calling FB.init().
FB.getLoginStatus() called before calling FB.init().
FB.getLoginStatus() called before calling FB.init().

Any idea ?

Best Regards,
Laurent