OS Authentication login gives ORA-06512 and ORA-01400: "cannot insert NULL into..." errors (4234874)

Ran into the following problems after Quest Code Tester was installed. The program started up fine and then Edit | New Test Definition is selected.

1. Owner selected:UserName
2. Package selected: SOME_PKG
(valid status, etc)
3. Clicked OK

Following error:

General:
ORA-01400: cannot insert NULL into ()
ORA-06512: at JSMITH.QU_RUNTIME, line 1426
ORA-06512: at JSMITH.QU_RUNTIME, line 1449
ORA-06512: at JSMITH.QU_RUNTIME, line 1545
ORA-06512: at JSMITH.QU_HARNESS_CP, line 350
ORA-01400: cannot insert NULL into (JSMITH.QU HARNESS.HARNESS OWNER)
ORA-06512: at JSMITH.QU_HARNESS_CP, line 575
ORA-06512: at line 4

Advanced:
Error stack Call stack fields had no additional info

Environment:
declare
HANDLE_ERROR_IN boolean := sys.diutil.int_to_bool(:HANDLE_ERROR_IN);
begin
QU_HARNESS_CP.N_INS_CLOBS_IN_CHUNKS
( UNIVERSAL_ID_IN => :UNIVERSAL_ID_IN, HARNESS_OWNER_IN => :HARNESS_OWNER_IN, NAME_IN => :NAME_IN <...etc...> );
end;

Set up to login withUserName as OS authentication.  Usually login as username/password --> EXTERNAL/. In QCTO had to login by simply leaving both fields blank when prompted.