How come this script isn't doing anything?

I'm making a GUI that is a list of all players on the server. I proceeded to test it, and it didn't do anything. There was nothing in the output. I figured out that it was the PlayerAdded event, and the actual function worked.

Here is the code:

function MakeList()
    print("Making list")
    Players = game.Players:GetChildren()
    for i = 1, #Players do
        btn = script.Parent.Parent.TextButton:Clone()
        print("Button cloned.")
        btn.Parent = script.Parent
        print("Button moved.")
        btn.Text = Players[i].Name
        btn.Visible = true
    end
end
game.Players.PlayerAdded:connect(MakeList)
game.Players.PlayerRemoving:connect(MakeList)

I also tried:

function MakeList()
    print("Making list")
    Players = game.Players:GetChildren()
    for i = 1, #Players do
        btn = script.Parent.Parent.TextButton:Clone()
        print("Button cloned.")
        btn.Parent = script.Parent
        print("Button moved.")
        btn.Text = Players[i].Name
        btn.Visible = true
    end
end
game.Players.PlayerAdded:connect(function()
    MakeList()
end)

Why are neither of these doing anything when a player enters the game?