I am making a new unit based off Starkiller in the TFU2 trailer, but I can't get his second lightsaber to be looking backwards (the attachedmesh lightsaber on the left hand)

I used Ace's reversed one for the right one and it works just fine, but when attaching it to the left hand, nothing shows up ingame...

Anyone has an idea, or isn't it possible to have both facing back?

You need to adjust the length of the lightsaber in a negative number. Check the odf file for "SaberLength = XX"

Of course this would work better if you have a saber model has backward direction, so no need to change anything in the odf, otherwise it will be seen as pointing to the floor, as the beam starts from a null and depending of the position (rotation) affect the direction of the saber.

Hope help you.

@ Forcemaster - He's already using a reversed mesh, it's just that the left-hand saber isn't showing up. I'm not sure what's wrong here, though.