can't CREATE TRIGGER

Hello

I can't create triggers, when I call for example:
ficha=> CREATE TRIGGER TRG_persons_id AFTER INSERT ON ficha_ofperson
ficha-> EXECUTE PROCEDURE add_person_id ( 'family_id', 'person_id' );

, the creation never finish and finally, after many minutes, I kill the
creation with Ctrl+c.
I try also a simple trigger creation with a function without arguments
and also the creation never finish.
 The functions work OK, I can call theme without problems, see below:
ficha=> select add_person_id (1,7);

 I also add a permissions as postgres user's, see below:
ficha=# GRANT TRIGGER ON TABLE ficha_ofperson TO PUBLIC;
GRANT

  So.., any Idea what is my error ???

   Thank you in advance,
             Gustavo

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