Cant pick up darkrp money

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i get this error when u hit "E" on the dropped money
18:33:01 L 06/25/2012 - 18:10:12: Lua Error: [gamemodes\darkrp\entities\entities\spawned_money\init.lua:25] attempt to call method 'Notify' (a nil value)
THE CODE IS

AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")

include("shared.lua")

function ENT:Initialize()
self:SetModel("models/props/cs_assault/money.mdl")
self:PhysicsInit(SOLID_VPHYSICS)
self:SetMoveType(MOVETYPE_VPHYSICS)
self:SetSolid(SOLID_VPHYSICS)
self:SetUseType(SIMPLE_USE)

local phys = self:GetPhysicsObject()
self.nodupe = true
self.ShareGravgun = true

phys:Wake()
end

function ENT:Use(activator,caller)
local amount = self.dt.amount

activator:AddMoney(amount or 0)
GAMEMODE:Notify(activator, 0, 4, "You have found " .. CUR .. (self.dt.amount or 0) .. "!")
self:Remove()
end

function DarkRPCreateMoneyBag(pos, amount)
local moneybag = ents.Create("spawned_money")
moneybag:SetPos(pos)
moneybag.dt.amount = amount
moneybag:Spawn()
moneybag:Activate()
return moneybag
end

function ENT:Touch(ent)
if ent:GetClass( ) ~= "spawned_money" or self.hasMerged or ent.hasMerged then return end

ent.hasMerged = true

ent:Remove()
self.dt.amount = self.dt.amount + ent.dt.amount
end

[editline]25th June 2012[/editline]

btw css is installed right

[lorde banana]

you either have an old version of DarkRP or you broke the file GAMEMODE:Notify is in

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ill try to update darkrp. do you know where the GAMEMODE:notify would be in