It results in an error with position, repeated no matter what and the second error if I rotated it before hand.

Errors at Line 85 and 93. 85: Attempt to index nil with position 93: Model:SetPrimaryCFrame() failed because no PrimaryPart has been set, or the PrimaryPart no longer exists. Please set Model.PrimaryPart before using this.

The errors only happen after it runs once. It's like it needs to update and realize that stuff doesn't exist. I don't really know.

Also there is another script, but it works fine.

local replicatedStorage = game:GetService("ReplicatedStorage")
local placeStructure = replicatedStorage:WaitForChild("PlaceStructure")
local structures = replicatedStorage:WaitForChild("Structures")
local sillhouettes = replicatedStorage:WaitForChild("Sillhouettes")

local UIS = game:GetService("UserInputService")
local RunService = game:GetService("RunService")

--local player = game.Player.LocalPlayer
local player = game:GetService("Players").LocalPlayer
local StructureFrame = script.Parent
local char = player.Character or player.Character:Wait()
local HumanoidRootPart = char:WaitForChild("HumanoidRootPart")
local mouse = player:GetMouse()
local yBuildingOffset = 0.5
local maxPlacingDistance = 50
local rKeyIsPressed = false
local placingStructure = false
local yOrientation=0
local goodTOPlace = false
local placedStructure
local clientStructure

local rotating = false

-- Handles start of temporary brick rotation
function handleKeyInputStarted(input)
	if rotating == false then
		rotating = true
		rKeyIsPressed = true

		local rotationSpeed = 90
		while rKeyIsPressed do
			wait()
			if placingStructure == true then
				yOrientation = yOrientation + rotationSpeed			
				repeat
					wait()
				until rKeyIsPressed == false
			end
		end
		rotating = false
	end
end

-- Handles end of temporary brick rotation
function handleKeyInputEnded(input)
	if input.KeyCode == Enum.KeyCode.R then
		rKeyIsPressed = false						
	end
end

-- Handles construction of actual Brick when user is satisfied with placement/rotation 
function handleMouseInputBegan(input)
	if placingStructure ==  true then
		if goodTOPlace == true then
			local StructureCFrame = clientStructure.PrimaryPart.CFrame
			placedStructure = placeStructure:InvokeServer(clientStructure.Name, StructureCFrame)

			if placedStructure == true then
				placingStructure = false
				clientStructure:Destroy()
				StructureFrame.Enabled = true
			end
		end
	end
end

-- Handles general input (mouse or keyboard) input
function handleInputStarted(input)
	if input.KeyCode == Enum.KeyCode.R then
		handleKeyInputStarted(input)
	elseif input.UserInputType == Enum.UserInputType.MouseButton1 then
		handleMouseInputBegan(input)
	end
end

-- Handles rendering the temporary Brick during placement
function handleRenderStepped()
	local mouseRay = mouse.UnitRay
	local castRay = Ray.new(mouseRay.Origin, mouseRay.Direction * 1000)
	local ignoreList = {clientStructure, char}
	local hit, position = workspace:FindPartOnRayWithIgnoreList(castRay, ignoreList)

	if hit and (HumanoidRootPart.Position - clientStructure.PrimaryPart.Position).Magnitude < maxPlacingDistance then
		goodTOPlace = true
	else
		goodTOPlace = false
	end

	local newAnglesCFrame = CFrame.Angles(0, math.rad(yOrientation), 0)
	local newCFrame = CFrame.new(position.X, position.Y + yBuildingOffset, position.z)
	clientStructure:SetPrimaryPartCFrame(newCFrame * newAnglesCFrame)
end

-- Handles constructing the temporary placement brick when the create button is pressed.
function handleBrickButtonPressed(structureName)
	StructureFrame.Enabled = false

	if placingStructure == false then
		placingStructure = true

		clientStructure = sillhouettes:FindFirstChild(structureName):Clone()
		for x, v in pairs(clientStructure:GetChildren()) do
			if v:IsA("Part") then
				v.CanCollide = false
			end
		end
		clientStructure.Parent = game.Workspace

		local startingCFrame = CFrame.new(0, -2, -15)
		clientStructure:SetPrimaryPartCFrame(HumanoidRootPart.CFrame:ToWorldSpace(startingCFrame))

		RunService.RenderStepped:Connect(handleRenderStepped)
	end
end

-- Iterate over all Buttons in the StructureFrame and attach a mouse listener
for _, structureButton in pairs(StructureFrame.PurchasesScreen:GetChildren()) do
	if structureButton:IsA("TextButton") then
		structureButton.MouseButton1Up:Connect(function() 
			handleBrickButtonPressed(structureButton.Name)	
		end)
	end
end


UIS.InputBegan:Connect(handleInputStarted)
UIS.InputEnded:Connect(handleKeyInputEnded)

I know this is a really long script and I'm sorry I just didn't know where else to look. If you read this all and find an answer then I really don't know how to thank you.

Anonymous