Query Result export problem

Question

When I attempt to export query results, I consistently get an error and am unable to get any export. I have taken the following steps:
1. Right click output grid.
2. Select Export >
3. Select any format.
These steps result in this error, in a dialog box:
ORA-00907: missing right parenthesis (dialog title)
An error was encountered performing the requested operation:
ORA-00907: missing right parenthesis
Vendor code 907
I am on Windows XP SP2, and I have been reporting this and similar errors through several of the beta Raptor / SQLDeveloper versions. It is still occurring in the production version. Please let me know if I may provide any further information.

Answer 1

Here is the query, which has only 4 columns: EWUID, FULL_NAME, PROGRAM, and STYP. The query returns 48 rows.
SELECT DISTINCT
p.id_number ewuid,
p.full_name_lfmi full_name,
r.program,
'Recruit' AS styp
FROM as_person p, as_recruitment_information r
WHERE
p.person_uid = r.person_uid
AND r.program IN ('POST-BACH','CERT-TEACHER')
UNION ALL
SELECT DISTINCT
p.id_number ewuid,
p.full_name_lfmi full_name,
a.program,
CASE WHEN APPL_ACCEPT_ANY_TIME_IND = 'Y' THEN 'App and Stu' ELSE 'Applicant' END AS styp
FROM as_person p, as_admissions_application a
WHERE
p.person_uid = a.person_uid
AND a.program IN ('POST-BACH','CERT-TEACHER')
-- PROGRAM: PB_Curriculum.SQL
-- AUTHOR: BEN MORGAN
-- DATE: 5/4/2006
-- PURPOSE: GENERATE LIST OF ALL Post-Bac APPLICANTS with invalid
-- curriculum programs (POST-BACH and CERT-TEACHER) for
-- manual cleanup.
The query looks at 3 views - as_person, as_recruitment_information, and as_admissions_application. I can post the code that generates each view, but that would take pages, so please let me know if you need it.
However, I can successfully export the following query:
select *
from as_admissions_application
where STUDENT_POPULATION = 'R'
as_admissions_application is one of the same views as in the query above - so it isn't a specific problem with the view. The difference is the commenting I have below the query. These are legal SQL comments, and they document what I'm using the query for. I've tried putting a semi-colon after the comments, but that doesn't work either. But I think the comments are the issue.
Our version of Oracle is: Oracle9i Enterprise Edition Release 9.2.0.5.0 - 64bit Production.