SQL & PL/SQL

Hi,

i have a mass operation with some triggers to increment the id of a table ...

now, some of the copy&pasted statements working, some won't ... :(

part of the statement:

CREATE OR REPLACE TRIGGER SHEMA.TRG_INS_SEQ_LICENSE_ID BEFORE INSERT ON SHEMA.LICENSE REFERENCING OLD AS old NEW AS new FOR EACH ROW
(some pl/sql syntax)

^^ this doesn't print out any error.

CREATE OR REPLACE TRIGGER SHEMA.TRG_INS_SEQ_SOFTWARE_ID BEFORE INSERT ON SHEMA.SOFTWARE REFERENCING OLD AS old NEW AS new FOR EACH ROW
(some pl/sql syntax)

^^ there's an error like:
CREATE OR REPLACE TRIGGER SHEMA.TRG_INS_SEQ_WORKSTATION_ID BEFORE INSERT ON SHEMA.WORKST
*
ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-320: the declaration of the type of this expression is
incomplete or malformed

whats going wrong?? both tables exists in the database with an id field defined as number(10) and flagged with a primary key.

meybe somebody can explain ...

thanks