TTT FA:S Weapons Not Firing

I downloaded an addon that converts the FA:S weapons to TTT. I installed that and the original SWEPS to my server. The models and weapons spawned in and everything. But, everytime I try to fire one of the FA:S weapons I get this error:

[ERROR] lua/weapons/fas2_base/sh_bullet.lua:43: attempt to perform arithmetic on field ‘Damage’ (a nil value)

  1. FireBullet - lua/weapons/fas2_base/sh_bullet.lua:43
  2. unknown - lua/weapons/fas2_base/shared.lua:790

Any help would be very appreciated!

Post the code or the link to the addon.