How to catch any IDL errors?

Hi folks,

Could any IDL expert explain me to cause IDL to be stopped ANYTIME an
error occur?

I've been struggling to catch an "% Keyword parameters not allowed in
call" error.
I don't know which keyword parameters, neither which routine....
I can't locate the error. It's a nightmare!

Already tried:

1) on_error, 0

2) CATCH, Error_status
    IF Error_status NE 0 THEN BEGIN
       PRINT, 'Error index: ', Error_status
       PRINT, 'Error message: ', !ERROR_STATE.MSG
       stop
    ENDIF

Please help! :)

Nicolas