Why does this work perfectly w/o FE but it can't get past the first line w/ FE?

My sword script works fine w/o FE, but with FE on it doesn't even get past the first line. I setup prints along the script and not a single one of the showed in the output. There are no errors either. The main sword function

function onKeyPress(actionName, userInputState, inputObject)
    if userInputState == Enum.UserInputState.Begin then
print("0")
local o = name.."swordout"--name is a variable higher in the script, it's just the player's name
print("1")
local u = name.."swordup"
print("2")
game:WaitForChild("ReplicatedStorage")
print("3")
local f = game.ReplicatedStorage.PlayerAttack
print("4")
local so = f:FindFirstChild(o)
local su = f:FindFirstChild(u)
print("5")
local attacking = true
so:FireServer()
print("6")
    SlashSound:Play()
    wait(.2)
su:FireServer()
print("7")
local attacking = false
    wait(speed)
local ready = true
    else
        wait(0)
    end
    end
 game.ContextActionService:BindAction("keyPress", onKeyPress, false, Enum.KeyCode.Q)

There's a server script triggered by the remote event but it can't even get there so I didn't bother putting it here.