I have a big mess of code of a pot that shatters into pieces when damaged enough and I get this error:

16:00:53.380 - The Parent property of Shatter is locked, current parent: NULL, new parent NPC 16:00:53.381 - Script 'Workspace.NPC.PotScript', Line 86

I made as a model so it will be easier to understand: http://www.roblox.com/plz-halp-meh-plez-item?id=280487754

I have seen some people ask the same question but the answers don't help in my case.

Here is the code:

local i = 1

script.Parent.Pot.Anchored = true
script.Parent.Humanoid.MaxHealth = math.huge

script.Parent.Head.Transparency = 1
script.Parent.Torso.Transparency = 1

for c = 1, 37 do
	local sha=script.Parent.Shatter["a"..c]
	sha.CanCollide=true
	sha.Transparency=1
end

backup=script.Parent.Shatter

model = backup:clone()

px = script.Parent.Pot.CFrame.X
py = script.Parent.Pot.CFrame.Y
pz = script.Parent.Pot.CFrame.Z
ny = pz + 10000





function killpot()
	
		for a = 1, 37 do
			script.Parent.Head.CFrame	=	CFrame.new(px, ny, pz)	* CFrame.Angles(0, math.pi, 0)
			script.Parent.Torso.CFrame	=	CFrame.new(px, ny, pz)	* CFrame.Angles(0, math.pi, 0)			
			script.Parent.Pot.CFrame	=	CFrame.new(px, ny, pz)	* CFrame.Angles(0, math.pi, 0)			
			local shat=script.Parent.Shatter["a"..a]	
			shat.Transparency=0
			shat.Anchored=false
		end
		wait(1.5)
		
		for g = 1, 37 do
			local shatte=script.Parent.Shatter["a"..g]		
			shatte.Anchored=true
		end
		
		for b = 1, 37 do
			local shatt=script.Parent.Shatter["a"..b]			
			wait(0.01)		
			shatt.Transparency=0.1
			wait(0.01)
			shatt.Transparency=0.2
			wait(0.01)
			shatt.Transparency=0.3
			wait(0.01)
			shatt.Transparency=0.4
			wait(0.01)
			shatt.Transparency=0.5
			wait(0.01)
			shatt.Transparency=0.6
			wait(0.01)
			shatt.Transparency=0.7
			wait(0.01)
			shatt.Transparency=0.8
			wait(0.01)
			shatt.Transparency=0.9
			wait(0.01)
			shatt.Transparency=1
			wait(0.01)		
		end
	end


local i=1

while i < 10 do
	local i = 1
	wait(0.1)
	if script.Parent.Humanoid.Health < 50 then
		script.Parent.Humanoid.Health = math.huge
		script.Parent.Shatter.a37.Sound:Play()		
		killpot()
		script.Parent.Shatter:Destroy()
		print"wait 10"		
		wait(1)
		model.Name = "Shatter"
		model.Parent = script.Parent     --This is line the error appears
		script.Parent.Pot.CanCollide = true
		script.Parent.Pot.Transparency = 0
		script.Parent.Humanoid.Health = 100		
		script.Parent.Head.CFrame	=	CFrame.new(px, py, pz)	* CFrame.Angles(0, math.pi, 0)
		script.Parent.Torso.CFrame	=	CFrame.new(px, py, pz)	* CFrame.Angles(0, math.pi, 0)			
		script.Parent.Pot.CFrame	=	CFrame.new(px, py, pz)	* CFrame.Angles(0, math.pi, 0)
	end
end

Sorry for it being such a mess I am a beginner at scripting.

Anonymous