Problems with UNION in SQL Statement

Hello everyone,
I'm having trouble using UNION when trying to combine the contents of two SQL Statements.
On the Edit SQL Query page there are three tabs. If I add the Following Query into the SQL tab, then click the Results tab I see the correct output from my tables. So the SQL Query works fine. However if I then Save and click through to the Query Designer tab then back to the SQL tab my statement reverts back to the default.
So to clarify, my statement works, but ASPRunner doesn't seem to be able to keep my chnages.
Any help would be appreciated.
Thanks
SELECT

dbo.tblModule.ID AS ID1,

dbo.tblModule.description AS Descr

FROM dbo.tblModule

UNION

SELECT

dbo.tblLocations.id AS id1,

dbo.tblLocations.locName AS Descr

FROM dbo.tblLocations

UNION

SELECT

dbo.tblThemes.ThemeID AS id1,

dbo.tblThemes.ThemeDescription AS Descr

FROM dbo.tblThemes