DBMS_PROFILER ORA-06528: Error executing PL/SQL profiler

Hi , everybody,

we are tryning to run dbms_profiler with user otm_ro  and got the following error

ERROR at line 1:

ORA-06528: Error al ejecutar el analizador de perfil PL/SQL

ORA-06512: en "SYS.DBMS_PROFILER", linea 123

ORA-06512: en "SYS.DBMS_PROFILER", linea 132

ORA-06512: en linea 4

in fact we already ran the script proftab.sql; with user otm_ro and still getting error:

$ sqlplus

SQL*Plus: Release 11.2.0.3.0 Production on Thu Jan 29 16:59:26 2015

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter user-name: otm_ro

Enter password:

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options