Error Nil Value on IceSkating Script?

I am trying to create special ice skates like those in Bayonetta. http://bayonetta.wikia.com/wiki/Odette Here is my code.(Local Script)

--Variables--
local Char
repeat
    Char          = game.Players.LocalPlayer.Character
    wait()
until Char
local humanoid    = Char:WaitForChild("Humanoid")
local Animation   = script.Parent.Animation.Animation
local RS          = game:GetService("ReplicatedStorage")
local Crystal     = RS:WaitForChild("MeshPart")
local IceSkates   = script.Parent.Parent
local animTrack   = humanoid:LoadAnimation(Animation)

--Checks-Humanoid--
local function onActivate()
	if humanoid:Running(16) then
		local clone = Crystal:Clone()
		clone.position = workspace.Dummy.LeftFoot
		print("Success!")
		
	end
end

--animTrack:Play()

IceSkates.Activated:connect(onActivate)

I have no clue whats wrong. Can someone please explain how to fix this please? I am sort of new to scripting.. Here is the error msg.

00:12:18.363 - attempt to call a nil value (x81)<