I'm guessing this is a modding problem, and not a modeling one, but my V-wing is only "working" on one side.

What I mean is all the Hardpoints on the left side of the vehicle work, the lasers, the missiles, the exhaust, the damage fx.

But none of those things work on the right side.

Here's the ODF I'm using, anyone got any advise on this?

Are you calling your hardpoints right? I know that at least in the weapon hps I see that you call hp_fire, hp_fire1, hp_fire3, and hp_fire4, but no hp_fire2. Any chance you just confused your own numbering system?

No, I doubt it, I opened XSI up, to make sure I had it right, hp_fire2 was one that I put under the nose, cause I wasn't sure where the missiles came from, but decided to use the other nulls I appropriated for them.

I just took another look at your scene and it appears that you rotated the nulls on the rightside by 180 degrees on the Y axis. When in doubt the direction that a Null points, select the null and hit Enter to bring up it's property ppg and change the icon to "Arrow".
Also, problems occur ingame when you symmetrize nulls in XSI, you must create a new null for each one you need.

The model will need to be re-exported.

Ack symmetry got me.