Not a single GUI button responds throughout my entire game?

Find the game in question here.

I was working on some menu GUI and all of a sudden I notice that none of the SurfaceGUI in the game and or the menu responds to the mouse at all. It wont register hovering, clicking or any other event related to the mouse. I made a brand new part with a GUIButton on it and that didn't respond ether. I also tried putting the ZIndex of the buttons to -10 but that didn't help

The weirdest part is that scrollbars work just fine still.

My best guess that its this script that opens and closes the menu if a level is started. Just because its the only thing I added in relation to SurfaceGUI when I noticed the problem.

script.Parent.Changed:Connect(function()
	if script.Parent.Value == true then
		local MenuObjects = game.Workspace.Menu:GetChildren()
		for i=1,#MenuObjects do
			MenuObjects.SurfaceGui.Enabled = false
		end
	end
	if script.Parent.Value == true then
		local MenuObjects = game.Workspace.Menu:GetChildren()
		for i=1,#MenuObjects do
			MenuObjects.SurfaceGui.Enabled = true
		end
	end
end)

But its still quite a stretch.

Here's the Explorer if that helps at all. Id be happy to give any other information that could help with this.