everything was doing fine until the following step....
Anybody has any idea?

Thanx

. exporting posttables actions
EXP-00008: ORACLE error 4045 encountered
ORA-04045: errors during recompilation/revalidation of
SYS.DBMS_AQ_IMPORT_INTERN
AL
ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-905: object SYS.AQ$_SUBSCRIBERS is invalid
ORA-06508: PL/SQL: could not find program unit being called
ORA-06512: at line 1
ORA-06512: at "SYS.DBMS_SYS_SQL", line 787
ORA-06512: at "SYS.DBMS_SQL", line 328
ORA-06512: at "SYS.DBMS_EXPORT_EXTENSION", line 82
ORA-06512: at "SYS.DBMS_EXPORT_EXTENSION", line 133
ORA-06512: at line 1
EXP-00000: Export terminated unsuccessfully

Could try rerunning catalog.sql and catproc.sql from
$ORACLE_HOME/rdbms/admin in server manager connected internal

su - oracle
cd $ORACLE_HOME/rdbms/admin
$ORACLE_HOME/bin/svrmgrl

And try again. Looks like the there are errors in some of the procedures.
Catalog and catproc
regenerated the data dictionary and procedural options.

Hope this helps,
Dan