ORA-06508, ORA-06512 errors with pl/sql

Received errors below with the following commands in Toad.  Please advise on possible issues.

SET DEFINE OFF

SET SERVEROUTPUT OFF

BEGIN

    LTT_USER.SETCONFIGURATION('GISD');

    LTT_USER.EDITJOB('A0000727');

 

    INSERT INTO MOP_ESTABLISHED_VL VALUES ('IDLE', 7);

 

    LTT_POST.POST;

    G3E_MANAGEMODLOG.GTUPDATEDELTASALL;

    LTT_USER.DONE;

END;

/

ORA-20001:  Post - ORA-06508: PL/SQL: could not find program unit being called

ORA-06512: at "PRISMADM.LTT_POST", line 602