So far, there are about three versions of this game. Go grab your game disk. Now, look on it's underside and check out the innermost area with the really tiny text. If it says...
DOL-GALE-0-00 : You have version 1.0. All the glitches should work for you.
DOL-GALE-0-01 : You have version 1.1. The glitches may or may not work.
DOL-GALE-0-02 : You have version 1.2. Unfortunately, many of the glitches (the ones that say "you may have the wrong version") will probably not work for you.
DOL-GALE-0-anything higher : You probably have an even higher version, meaning that even less glitches may be available to you... sorry!! We feel your pain!

Thanks to Jesse for this info!