jbox1 That is from the changed ammo specification format.
Try changing the specification for wifi in the mod.txt to the following,
{
Action = Add
AddTo = "<Ammo/ammo.txt>/Ammo"
ToAdd
{
ID = wifi
MaxCarried = 0
CarriedSprite
{
File = "./Data/Ammo/bullet.png"
Size = [1, 1]
}
CarriedSpriteOffset = [0, 0]
}
}