ArmAII OA ACE no weapons on back (Solved)

[Python1]

Hi all, just taking a shot in the dark here but hoping someone will know what I'm doing wrong. One of the ACE II features is the ability to carry weapons on your back.

However, in all of the missions I make this feature seems to be disabled.

Anyone know what I am doing to disable this? Or is there a way for me to ensure that it get's enabled.

Even when I take a mission that has this feature, once I edit that mission to add ammo boxes or whatever, the feature somehow stops working.

Thanks for any help, I don't beleive this is a bug.

SOLVED: Turns out placing the No Stamina Module makes weapons on back disabled.