"Trying to call Method on object of type: 'Vector3' with incorrect arguements." Help please?

The script is this:

fout = false
function touched(part)
    if fout == false then
    local flag = game.ServerStorage.Flag:Clone()
    flag.Parent = workspace
    workspace.Flag.CanCollide = true
    flag.Position = part.Parent.Head.Position + Vector3.new(0,13,0)
    flag.Anchored = false
    flag.Orientation = part.Parent.Head.Orientation + Vector3.new(0,90,90)
    fout = true
local weld = Instance.new('Weld')
    weld.Part0 = part.Parent.HumanoidRootPart
    weld.C0 = part.Parent.Head.CFrame:inverse()
    weld.Part1 = game.Workspace.Flag
    weld.C1 = game.Workspace.Flag.CFrame:inverse()
    weld.Parent = game.Workspace.Flag
    end
end

workspace.FlagGiver.Touched:Connect(touched)

Inside the flag:

function GFlag(part)
    workspace.Flag:Destroy()
    local NFlag = game.ServerStorage.Flag:Clone()
    NFlag.Orientation = part.Parent.Head.Orientation(0,90,90)
    NFlag.Position = part.Parent.Head.Position + Vector3(0,13,0)
local weld = Instance.new('Weld')
    weld.Part0 = part.Parent.HumanoidRootPart
    weld.C0 = part.Parent.Head.CFrame:inverse()
    weld.Part1 = game.Workspace.Flag
    weld.C1 = game.Workspace.Flag.CFrame:inverse()
    weld.Parent = game.Workspace.Flag
end

workspace.Flag.Touched:Connect(GFlag)

The purpose of the first script is to summon a flag above the players head upon touching a brick, the purpose of the second script is to allow anyone who touches the flag to steal it.

The first runs fine, however when touching the second flag it is destroyed then this message appears in the output:

19:58:37.362 - Trying to call method on object of type: Vector3 with incorrect arguments. 19:58:37.362 - Stack Begin 19:58:37.363 - Script 'Workspace.Flag.Script', Line 4 19:58:37.363 - Stack End

I can't work out what I've done wrong, help?