It works in studio but in game it doesn't. When I check what was wrong in game, it said Ba wasn't a valid member of StarterGui.

Here is script. 


local Back2 = script.Parent.Ba
local BarHold = script.Parent.BarFrame
local Loadbar = script.Parent.BarFrame.barLoad
local LogoSp = script.Parent.LogoSpin
local Nam = script.Parent.BoiNOi
local PlayBut = script.Parent.PleyBut
local barloading = false
local canSpin = false
local blr = game.Lighting.Blur
local canPlay = false
blr.Size = 50



function playClicked()
	Nam.TextTransparency = 1
	PlayBut.TextTransparency = 1
	Nam:TweenPosition(UDim2.new(0.329, 0,-2, 0),"In","Quad",1.5)
	PlayBut:TweenPosition(UDim2.new(0.455, 0,1, 0),"In","Quad",1.5)
	wait(1)
	Back2:Remove()
		for g =  50,0,-5 do
			wait(.01)
			blr.Size = (g)
		end
end

function onStart()
	repeat wait() until Back2
	if Back2 then 
		print("HERE")
	end 
	blr.Size = 56
	Nam.TextTransparency = 1
	PlayBut.TextTransparency = 1
	LogoSp.ImageTransparency = 1
	LogoSp:TweenPosition(UDim2.new(0.403, 0,0.302, 0),"In","Quad",.5)
	PlayBut:TweenPosition(UDim2.new(0.455, 0,1, 0),"In","Quad",1.5)
	Nam:TweenPosition(UDim2.new(0.329, 0,-2, 0),"In","Quad",.5)
	Back2.Position = UDim2.new(0,0,0, 0)
	Loadbar.Size = UDim2.new(0, 4,0, 35)
	wait(.1)
	barloading = true 
		if barloading == true then
			repeat wait() until Loadbar
			wait(.1) 
			Loadbar:TweenSize(UDim2.new(0, 111,0, 35),"Out","Quad",1)
			wait(1)
			Loadbar:TweenSize(UDim2.new(0, 248,0, 35),"Out","Quad",1)
			wait(1.5)
			Loadbar:TweenSize(UDim2.new(0, 427,0, 35),"Out","Quad",1)
			barloading = false
		end
		wait(2)
		BarHold:TweenPosition(UDim2.new(1, 0,0.85, 0),"Out","Quad",1)
		wait(2)
	if barloading == false then
		canSpin = true 
		print("Can spin = true")
			if canSpin == true then
				repeat wait() until LogoSp
					print("about to spin")
					LogoSp.ImageTransparency = 0
					for i = 1,120,1 do
						wait(0.01)
						LogoSp.Rotation = LogoSp.Rotation + 20
							if i == 120 then
								canSpin = false
								repeat wait() until LogoSp and Nam and PlayBut
								LogoSp.Rotation = 0
								wait(1)
								LogoSp:TweenSize(UDim2.new(0, 121,0, 123),"In","Quad",1)
								LogoSp:TweenPosition(UDim2.new(0.437, 0,0.37, 0),"In","Quad",1)
								wait(2)
								LogoSp:TweenPosition(UDim2.new(0.403, 0,1, 0),"Out","Quad",1)
								wait(2)
								Nam.TextTransparency = 0
								Nam:TweenPosition(UDim2.new(0.329, 0,0, 0),"In","Quad",1.5)
								wait(1)
								PlayBut.TextTransparency = 0
								PlayBut:TweenPosition(UDim2.new(0.455, 0,0.478, 0),"In","Quad",1.5)
								canPlay = true
									if canPlay == true then
										 if Nam.TextTransparency == 0 and PlayBut.TextTransparency == 0 then
										PlayBut.MouseButton1Click:connect(playClicked)
										
										end
									end
							end
					end
			end
		
	end
end


onStart()
Anonymous