How do I fix this?

I don't know what's wrong here, the first time it works fine, but after resetting and touching the giver again, it won't work. Output doesn't show any errors whatsoever.

function onTouched(hit)
    if hit.Parent:findFirstChild("Humanoid") ~= nil and hit.Parent:findFirstChild("Backpack") == nil then

        local h = hit.Parent:findFirstChild("Humanoid")
        if h ~= nil then
            gui = script:GetChildren()
                for i=1, #gui do
                    if gui[i].className == "GuiMain" then
                        x = gui[i]:clone()
                        player = game.Players:GetPlayerFromCharacter(hit.Parent)
                            if player ~= nil then
                                x.Parent = player.PlayerGui
                            else
                                print("Cataphract failed.")
                            end
                    end
                end
        end

        local g = game.Lighting.Backpack:clone()
        g.Parent = hit.Parent
        local C = g:GetChildren()
        for i=1, #C do
            if C[i].className == "Part" then
                local W = Instance.new("Weld")
                W.Part0 = g.Middle
                W.Part1 = C[i]
                local CJ = CFrame.new(g.Middle.Position)
                local C0 = g.Middle.CFrame:inverse()*CJ
                local C1 = C[i].CFrame:inverse()*CJ
                W.C0 = C0
                W.C1 = C1
                W.Parent = g.Middle
            end
                local Y = Instance.new("Weld")
                Y.Part0 = hit.Parent.Torso
                Y.Part1 = g.Middle
                Y.C0 = CFrame.new(0, 0, 0)
                Y.Parent = Y.Part0
        end

        local h = g:GetChildren()
        for i = 1, # h do
            h[i].Anchored = false
            h[i].CanCollide = false
        end

    end
end

script.Parent.Touched:connect(onTouched)