Why does this script sometimes show leaderstats but not always?

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game.Players.PlayerAdded:connect(function(player)
     local leaderstats = Instance.new("Model")
     leaderstats.Name = "leaderstats"
     leaderstats.Parent = player

     local Stage = Instance.new("IntValue") --We create a new IntValue
     Stage.Name = "Stage No." --this is the name you want the leader-stat to be when it shows up in-game.
     Stage.Value = 0 --this is the value of money the new player starts out with. To change this, you can add some more code (shown later)
     Stage.Parent = leaderstats -- Set the money object as a child of the leaderstats object.
 end)


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Assets = {755156652,327081386,833322858}

for _, asset in ipairs(Assets) do
     game:GetService("ContentProvider"):Preload("http://www.roblox.com/asset/?id=" .. asset)
end

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