EXP-00056: Oracle Error when trying to export database

I am trying to export a database, and I am getting an error. I understand that one of the most common causes of these errors is that I am using a higher version of the export utility compared to my RDBMS version. But this is not the case. My database version is and the exp version
EXP-00056: ORACLE error 6550 encountered ORA-06550: line 1, column 41:PLS-00302: component 'SET_NO_OUTLINES' must be declared ORA-06550: line 1, column 15: PL/SQL: Statement ignoredEXP-00000: Export terminated unsuccessfully

>> Possbile Solutions :

It could be that your Data Dictionary is not set to support this higher version of export. Sign on to your database as SYS and run the @?/rdbms/admin/catexp.sql script. If that doesn't fix the problem, try rerunning @?/rdbms/admin/catalog.sql and @?/rdbms/admin/catproc.sql scripts.