PLEASE HELP LUA

I am having some issues with mad cows weapons. It randomly drops players with “Too many lua errors” here is some info.

The rcon when players are dropped


[ERROR] addons/mad cows weapons updated!!/lua/weapons/weapon_mad_base/shared.lua
:719: Tried to use a NULL entity!
  1. __index - [C]:-1

   2. unknown - addons/mad cows weapons updated!!/lua/weapons/weapon_mad_base/sh
ared.lua:719

The file it refers too



local Sound = Sound
local Vector = Vector
local CreateConVar = CreateConVar
local CurTime = CurTime
local IsFirstTimePredicted = IsFirstTimePredicted
local Angle = Angle
local EffectData = EffectData
local SinglePlayer = SinglePlayer
local FrameTime = FrameTime
local IsValid = IsValid
local WorldSound = WorldSound
local util = util
local hook = hook
local math = math
local timer = timer
local ents = ents
local ACT_VM_IDLE = ACT_VM_IDLE
local PLAYERANIMEVENT_CUSTOM_GESTURE = PLAYERANIMEVENT_CUSTOM_GESTURE
local GESTURE_SLOT_ATTACK_AND_RELOAD = GESTURE_SLOT_ATTACK_AND_RELOAD
local ACT_MP_ATTACK_CROUCH_PRIMARYFIRE = ACT_MP_ATTACK_CROUCH_PRIMARYFIRE
local ACT_MP_ATTACK_STAND_PRIMARYFIRE = ACT_MP_ATTACK_STAND_PRIMARYFIRE
local FCVAR_REPLICATED = FCVAR_REPLICATED
local FCVAR_ARCHIVE = FCVAR_ARCHIVE
local ACT_VM_DRAW_EMPTY = ACT_VM_DRAW_EMPTY
local ACT_VM_DRAW_SILENCED = ACT_VM_DRAW_SILENCED
local ACT_VM_DRAW = ACT_VM_DRAW
local IN_SPEED = IN_SPEED
local ACT_VM_IDLE_SILENCED = ACT_VM_IDLE_SILENCED
local ACT_VM_IDLE_EMPTY = ACT_VM_IDLE_EMPTY
local IN_FORWARD = IN_FORWARD
local IN_BACK = IN_BACK
local IN_MOVELEFT = IN_MOVELEFT
local IN_MOVERIGHT = IN_MOVERIGHT
local HUD_PRINTTALK = HUD_PRINTTALK
local ACT_VM_RELOAD = ACT_VM_RELOAD
local ACT_VM_RELOAD_SILENCED = ACT_VM_RELOAD_SILENCED
local ACT_VM_RELOAD_EMPTY = ACT_VM_RELOAD_EMPTY
local IN_USE = IN_USE
local ACT_INVALID = ACT_INVALID
local IN_DUCK = IN_DUCK
local SERVER = SERVER
local CLIENT = CLIENT
local MAT_GLASS = MAT_GLASS
local MAT_SAND = MAT_SAND
local MAT_FLESH = MAT_FLESH
local MAT_ALIENFLESH = MAT_ALIENFLESH
local MAT_WOOD = MAT_WOOD
local MAT_CONCRETE = MAT_CONCRETE
local MAT_PLASTIC = MAT_PLASTIC

/*---------------------------------------------------------
------mmmm---mmmm-aaaaaaaa----ddddddddd---------------------------------------->
     mmmmmmmmmmmm aaaaaaaaa   dddddddddd	  Name: Mad Cows Weapons
     mmm mmmm mmm aaa    aaa  ddd     ddd	  Author: Worshipper
    mmm  mmm  mmm aaaaaaaaaaa ddd     ddd	  Project Start: October 23th, 2009
    mmm       mmm aaa     aaa dddddddddd	  Version: 2.0
---mmm--------mmm-aaa-----aaa-ddddddddd---------------------------------------->
---------------------------------------------------------*/

// Variables that are used on both client and server

local RecoilMul = CreateConVar ("mad_recoilmul", "1", {FCVAR_REPLICATED, FCVAR_ARCHIVE})
local DamageMul = CreateConVar ("mad_damagemul", "1", {FCVAR_REPLICATED, FCVAR_ARCHIVE})

SWEP.Category			= "Mad Cows Weapons"
SWEP.Author				= "Worshipper"
SWEP.Contact			= "Josephcadieux@hotmail.com"

// I have nothing to say here because I'm a prick
SWEP.Purpose			= ""
SWEP.Instructions			= ""
SWEP.HoldType				= "pistol"
SWEP.ViewModelFOV			= 60
SWEP.ViewModelFlip		= false
SWEP.ViewModel			= "models/weapons/c_pistol.mdl"
SWEP.WorldModel			= "models/weapons/w_pistol.mdl"
SWEP.AnimPrefix			= "python"
SWEP.UseHands			= true

SWEP.Spawnable			= false
SWEP.AdminSpawnable		= false

SWEP.Primary.Sound		= Sound("Weapon_AK47.Single")
SWEP.Primary.Recoil		= 10
SWEP.Primary.Damage		= 10
SWEP.Primary.NumShots		= 1
SWEP.Primary.Cone			= 0
SWEP.Primary.Delay 		= 0

SWEP.Primary.ClipSize		= 5					// Size of a clip
SWEP.Primary.DefaultClip	= 5					// Default number of bullets in a clip
SWEP.Primary.Automatic		= false				// Automatic/Semi Auto
SWEP.Primary.Ammo			= "pistol"

SWEP.Secondary.ClipSize		= -1					// Size of a clip
SWEP.Secondary.DefaultClip	= -1					// Default number of bullets in a clip
SWEP.Secondary.Automatic	= false				// Automatic/Semi Auto
SWEP.Secondary.Ammo		= "none"

SWEP.ActionDelay			= CurTime()

// I added this function because some weapons like the Day of Defeat weapons need 1.2 or 1.5 seconds to deploy
SWEP.DeployDelay			= 1

SWEP.ShellEffect			= "effect_mad_shell_pistol"	// "effect_mad_shell_pistol" or "effect_mad_shell_rifle" or "effect_mad_shell_shotgun"
SWEP.ShellDelay			= 0

// Is it a pistol, a rifle, a shotgun or a sniper? Choose only one of them or you'll fucked up everything. BITCH!
SWEP.Pistol				= false
SWEP.Rifle				= false
SWEP.Shotgun			= false
SWEP.Sniper				= false

SWEP.IronSightsPos 		= Vector (0, 0, 0)
SWEP.IronSightsAng 		= Vector (0, 0, 0)
SWEP.RunArmOffset 		= Vector (0, 0, 5.5)
SWEP.RunArmAngle 			= Vector (-35, -3, 0)

// Burst options
SWEP.Burst				= false
SWEP.BurstShots			= 3
SWEP.BurstDelay			= 0.05
SWEP.BurstCounter			= 0
SWEP.BurstTimer			= 0

// Custom mode options (Do not put a burst mode and a custom mode at the same time, it will not work)
SWEP.Type				= 1 					// 1 = Automatic/Semi-Automatic mode, 2 = Suppressor mode, 3 = Burst fire mode
SWEP.Mode				= false

SWEP.data 				= {}
SWEP.data.NormalMsg		= "Switched to semi-automatic."
SWEP.data.ModeMsg			= "Switched to automatic."
SWEP.data.Delay			= 0.5 				// You need to wait 0.5 second after you change the fire mode
SWEP.data.Cone			= 1
SWEP.data.Damage			= 1
SWEP.data.Recoil			= 1
SWEP.data.Automatic		= false

// Constant accuracy means that your crosshair will not change if you're running, shooting or walking
SWEP.ConstantAccuracy		= false

// I don't think it's hard to understand this
SWEP.Penetration			= true
SWEP.Ricochet			= true
SWEP.MaxRicochet			= 1

SWEP.Tracer				= 0					// 0 = Normal Tracer, 1 = Ar2 Tracer, 2 = Airboat Gun Tracer, 3 = Normal Tracer + Sparks Impact

SWEP.IdleDelay			= 0
SWEP.IdleApply			= false
SWEP.AllowIdleAnimation		= true
SWEP.AllowPlaybackRate		= true

SWEP.BoltActionSniper		= false				// Use this value if you want to remove the scope view after you shoot
SWEP.ScopeAfterShoot		= false				// Do not try to change this value

SWEP.IronSightZoom 		= 1.5
SWEP.ScopeZooms			= {10}
SWEP.ScopeScale 			= 0.4

SWEP.ShotgunReloading		= false
SWEP.ShotgunFinish		= 0.5
SWEP.ShotgunBeginReload		= 0.3



/*---------------------------------------------------------
   Name: SWEP:Initialize()
   Desc: Called when the weapon is first loaded.
---------------------------------------------------------*/
function SWEP:Initialize()
	self:SetWeaponHoldType(self.HoldType)
	if (SERVER) then
		// Fucking NPCs
		self:SetNPCMinBurst(30)
		self:SetNPCMaxBurst(30)
		self:SetNPCFireRate(self.Primary.Delay)
	end
end

/*---------------------------------------------------------
   Name: SWEP:Precache()
   Desc: Use this function to precache stuff.
---------------------------------------------------------*/
function SWEP:Precache()

	util.PrecacheSound("weapons/clipempty_pistol.wav")
end

/*---------------------------------------------------------
   Name: ENT:SetupDataTables()
   Desc: Setup the data tables.
---------------------------------------------------------*/
function SWEP:SetupDataTables()  

	self:DTVar("Bool", 0, "Holsted")
	self:DTVar("Bool", 1, "Ironsights")
	self:DTVar("Bool", 2, "Scope")
	self:DTVar("Bool", 3, "Mode")
end 

/*---------------------------------------------------------
   Name: SWEP:IdleAnimation()
   Desc: Are you seriously too stupid to understand the function by yourself?
---------------------------------------------------------*/
function SWEP:IdleAnimation(time)

	if not self.AllowIdleAnimation then return false end

	self.IdleApply = true
	self.ActionDelay = CurTime() + time
	self.IdleDelay = CurTime() + time
end

/*---------------------------------------------------------
   Name: SWEP:PrimaryAttack()
   Desc: +attack1 has been pressed.
---------------------------------------------------------*/
function SWEP:PrimaryAttack()

	// Holst/Deploy your fucking weapon
	if (not self.Owner:IsNPC() and self.Owner:KeyDown(IN_USE)) then
		bHolsted = !self.Weapon:GetDTBool(0)
		self:SetHolsted(bHolsted)

		self.Weapon:SetNextPrimaryFire(CurTime() + 0.3)
		self.Weapon:SetNextSecondaryFire(CurTime() + 0.3)

		self:SetIronsights(false)

		return
	end

	if (not self:CanPrimaryAttack()) then return end

	self.ActionDelay = (CurTime() + self.Primary.Delay + 0.05)
	self.Weapon:SetNextPrimaryFire(CurTime() + self.Primary.Delay)
	self.Weapon:SetNextSecondaryFire(CurTime() + self.Primary.Delay)

	// If the burst mode is activated, it's going to shoot the three bullets (or more if you're dumb and put 4 or 5 bullets for your burst mode)
	if self.Weapon:GetDTBool(3) and self.Type == 3 then
		self.BurstTimer 	= CurTime()
		self.BurstCounter = self.BurstShots - 1
		self.Weapon:SetNextPrimaryFire(CurTime() + 0.5)
	end

	self.Weapon:EmitSound(self.Primary.Sound)

	self:TakePrimaryAmmo(1)

	self:ShootBulletInformation()
end

/*---------------------------------------------------------
   Name: SWEP:SecondaryAttack()
   Desc: +attack2 has been pressed.
---------------------------------------------------------*/
function SWEP:SecondaryAttack()

	if self.Owner:IsNPC() then return end
	if not IsFirstTimePredicted() then return end

	if (self.Owner:KeyDown(IN_USE) and (self.Mode)) then // Mode
		bMode = !self.Weapon:GetDTBool(3)
		self:SetMode(bMode)
		self:SetIronsights(false)

		self.Weapon:SetNextPrimaryFire(CurTime() + self.data.Delay)
		self.Weapon:SetNextSecondaryFire(CurTime() + self.data.Delay)

		return
	end

	if (!self.IronSightsPos) or (self.Owner:KeyDown(IN_SPEED) or self.Weapon:GetDTBool(0)) then return end
	
	// Not pressing Use + Right click? Ironsights
	bIronsights = !self.Weapon:GetDTBool(1)
	self:SetIronsights(bIronsights)

	self.Weapon:SetNextPrimaryFire(CurTime() + 0.2)
	self.Weapon:SetNextSecondaryFire(CurTime() + 0.2)
end

/*---------------------------------------------------------
   Name: SWEP:SetHolsted()
---------------------------------------------------------*/
function SWEP:SetHolsted(b)

	if (self.Owner) then
		if (b) then
			self.Weapon:EmitSound("weapons/universal/iron_in.wav")
		else
			self.Weapon:EmitSound("weapons/universal/iron_out.wav")
		end
	end

	if (self.Weapon) then
		self.Weapon:SetDTBool(0, b)
	end
end

/*---------------------------------------------------------
   Name: SWEP:SetIronsights()
---------------------------------------------------------*/
function SWEP:SetIronsights(b)

	if (self.Owner) then
		if (b) then
			if (SERVER) then
				self.Owner:SetFOV(65, 0.2)
			end

			if self.AllowIdleAnimation then
				if self.Weapon:GetDTBool(3) and self.Type == 2 then
					self.Weapon:SendWeaponAnim(ACT_VM_IDLE_SILENCED)
				else
					self.Weapon:SendWeaponAnim(ACT_VM_IDLE)
				end

				self.Owner:GetViewModel():SetPlaybackRate(0)
			end

			self.Weapon:EmitSound("weapons/universal/iron_in.wav")
		else
			if (SERVER) then
				self.Owner:SetFOV(0, 0.2)
			end

			if self.AllowPlaybackRate and self.AllowIdleAnimation then
				self.Owner:GetViewModel():SetPlaybackRate(1)
			end	

			self.Weapon:EmitSound("weapons/universal/iron_out.wav")
		end
	end

	if (self.Weapon) then
		self.Weapon:SetDTBool(1, b)
	end
end

/*---------------------------------------------------------
   Name: SWEP:SetMode()
---------------------------------------------------------*/
function SWEP:SetMode(b)

	if (self.Owner) then
		if (b) then
			if self.Type == 1 then
				self.Primary.Automatic = self.data.Automatic
				self.Weapon:EmitSound("weapons/smg1/switch_burst.wav")
			elseif self.Type == 2 then
				self.Weapon:SendWeaponAnim(ACT_VM_ATTACH_SILENCER)
				self.Primary.Sound = Sound(self.Primary.SuppressorSound)

				if (IsValid(self.Owner) and self.Owner:GetViewModel()) then
					self:IdleAnimation(self.Owner:GetViewModel():SequenceDuration())
				end
			elseif self.Type == 3 then
				self.Weapon:EmitSound("weapons/smg1/switch_burst.wav")
			end

			if (SERVER) then
				self.Owner:PrintMessage(HUD_PRINTTALK, self.data.ModeMsg)
			end
		else
			if self.Type == 1 then
				self.Primary.Automatic = !self.data.Automatic
				self.Weapon:EmitSound("weapons/smg1/switch_single.wav")
			elseif self.Type == 2 then
				self.Weapon:SendWeaponAnim(ACT_VM_DETACH_SILENCER)
				self.Primary.Sound = Sound(self.Primary.NoSuppressorSound)

				if (IsValid(self.Owner) and self.Owner:GetViewModel()) then
					self:IdleAnimation(self.Owner:GetViewModel():SequenceDuration())
				end
			elseif self.Type == 3 then
				// Nothing here for the burst fire mode
				self.Weapon:EmitSound("weapons/smg1/switch_single.wav")
			end

			if (SERVER) then
				self.Owner:PrintMessage(HUD_PRINTTALK, self.data.NormalMsg)
			end
		end
	end

	if (self.Weapon) then
		self.Weapon:SetDTBool(3, b)
	end
end

/*---------------------------------------------------------
   Name: SWEP:CheckReload()
   Desc: CheckReload.
---------------------------------------------------------*/
function SWEP:CheckReload()
end

/*---------------------------------------------------------
   Name: SWEP:Reload()
   Desc: Reload is being pressed.
---------------------------------------------------------*/
function SWEP:Reload()

	// When the weapon is already doing an animation, just return end because we don't want to interrupt it
	if (self.ActionDelay > CurTime()) then return end 

	// Need to call the default reload before the real reload animation
	self.Weapon:DefaultReload(ACT_VM_RELOAD)

	if (self.Weapon:Clip1() < self.Primary.ClipSize) and (self.Owner:GetAmmoCount(self.Primary.Ammo) > 0) then
		self:SetIronsights(false)
		self:ReloadAnimation()
	end
end

/*---------------------------------------------------------
   Name: SWEP:ReloadAnimation()
---------------------------------------------------------*/
function SWEP:ReloadAnimation()

	// Reload with the suppressor animation if you're suppressor is on the FUCKING gun
	if self.Weapon:GetDTBool(3) and self.Type == 2 then
		self.Weapon:DefaultReload(ACT_VM_RELOAD_SILENCED)
	else
		self.Weapon:DefaultReload(ACT_VM_RELOAD)
	end

	if (IsValid(self.Owner) and self.Owner:GetViewModel()) then
		self:IdleAnimation(self.Owner:GetViewModel():SequenceDuration())
	end
end

/*---------------------------------------------------------
   Name: SWEP:SecondThink()
   Desc: Called every frame. Use this function if you don't 
	   want to copy/past the think function everytime you 
	   create a new weapon with this base...
---------------------------------------------------------*/
function SWEP:SecondThink()
end

/*---------------------------------------------------------
   Name: SWEP:Think()
   Desc: Called every frame.
---------------------------------------------------------*/
function SWEP:Think()

	self:SecondThink()

	if self.Weapon:Clip1() > 0 and self.IdleDelay < CurTime() and self.IdleApply then
		local WeaponModel = self.Weapon:GetOwner():GetActiveWeapon():GetClass()

		if self.Owner and self.Weapon:GetOwner():GetActiveWeapon():GetClass() == WeaponModel and self.Owner:Alive() then
			if self.Weapon:GetDTBool(3) and self.Type == 2 then
				self.Weapon:SendWeaponAnim(ACT_VM_IDLE_SILENCED)
			else
				self.Weapon:SendWeaponAnim(ACT_VM_IDLE)
			end

			if self.AllowPlaybackRate and not self.Weapon:GetDTBool(1) then
				self.Owner:GetViewModel():SetPlaybackRate(1)
			else
				self.Owner:GetViewModel():SetPlaybackRate(0)
			end		
		end

		self.IdleApply = false
	elseif self.Weapon:Clip1() <= 0 then
		self.IdleApply = false
	end

	if self.Weapon:GetDTBool(1) and self.Owner:KeyDown(IN_SPEED) then
		self:SetIronsights(false)
	end

		// If you're running or if your weapon is holsted, the third person animation is going to change
	if self.Owner:KeyDown(IN_SPEED) or self.Weapon:GetDTBool(0) then
		if self.Rifle or self.Sniper or self.Shotgun then
			if self.Owner:KeyDown(IN_DUCK) then
				self:SetWeaponHoldType("normal")
			else
				self:SetWeaponHoldType("passive")
			end

		elseif self.Pistol then
			self:SetWeaponHoldType("normal")
		end
	else
		self:SetWeaponHoldType(self.HoldType)
	end
	

	// Burst fire mode
	if self.Weapon:GetDTBool(3) and self.Type == 3 then
		if self.BurstTimer + self.BurstDelay < CurTime() then
			if self.BurstCounter > 0 then
				self.BurstCounter = self.BurstCounter - 1
				self.BurstTimer = CurTime()
				
				if self:CanPrimaryAttack() then
					self.Weapon:EmitSound(self.Primary.Sound)
					self:ShootBulletInformation()
					self:TakePrimaryAmmo(1)
				end
			end
		end
	end

	self:NextThink(CurTime())
end

/*---------------------------------------------------------
   Name: SWEP:Holster()
   Desc: Weapon wants to holster.
	   Return true to allow the weapon to holster.
---------------------------------------------------------*/
function SWEP:Holster()

	return true
end

/*---------------------------------------------------------
   Name: SWEP:Deploy()
   Desc: Whip it out.
---------------------------------------------------------*/
function SWEP:Deploy()

	self:DeployAnimation()

	if (IsValid(self.Owner) and self.Owner:GetViewModel()) then
		self:IdleAnimation(self.Owner:GetViewModel():SequenceDuration())
	end

	self.Weapon:SetNextPrimaryFire(CurTime() + self.DeployDelay + 0.05)
	self.Weapon:SetNextSecondaryFire(CurTime() + self.DeployDelay + 0.05)
	self.ActionDelay = (CurTime() + self.DeployDelay + 0.05)

	self:SetIronsights(false)

	return true
end

/*---------------------------------------------------------
   Name: SWEP:DeployAnimation()
---------------------------------------------------------*/
function SWEP:DeployAnimation()

	// Weapon has a suppressor
	if self.Weapon:GetDTBool(3) and self.Type == 2 then
		self.Weapon:SendWeaponAnim(ACT_VM_DRAW_SILENCED)
	else
		self.Weapon:SendWeaponAnim(ACT_VM_DRAW)
	end
end

/*---------------------------------------------------------
   Name: SWEP:CrosshairAccuracy()
   Desc: Crosshair informations.
---------------------------------------------------------*/
SWEP.SprayTime 		= 0.1
SWEP.SprayAccuracy 	= 0.2

function SWEP:CrosshairAccuracy()

	// Is it a constant accuracy weapon or is it a NPC? The NPC doesn't need a crosshair. Fuck him!
	if (self.ConstantAccuracy) or (self.Owner:IsNPC()) then
		return 1.0
	end
	
	local LastAccuracy 	= self.LastAccuracy or 0
	local Accuracy 		= 1.0
	local LastShoot 		= self.Weapon:GetNetworkedFloat("LastShootTime", 0)
	
	local Speed 		= self.Owner:GetVelocity():Length()

	local SpeedClamp = math.Clamp(math.abs(Speed / 705), 0, 1)
	
	if (CurTime() <= LastShoot + self.SprayTime) then
		Accuracy = Accuracy * self.SprayAccuracy
	end
	
	if (not self.Owner:IsOnGround()) then
		Accuracy = Accuracy * 0.1
	elseif (Speed > 10) then
		Accuracy = Accuracy * (((1 - SpeedClamp) + 0.1) / 2)
	end

	if (LastAccuracy != 0) then
		if (Accuracy > LastAccuracy) then
			Accuracy = math.Approach(self.LastAccuracy, Accuracy, FrameTime() * 2)
		else
			Accuracy = math.Approach(self.LastAccuracy, Accuracy, FrameTime() * -2)
		end
	end
	
	self.LastAccuracy = Accuracy
	return math.Clamp(Accuracy, 0.2, 1)
end

/*---------------------------------------------------------
   Name: SWEP:ShootBulletInformation()
   Desc: This function add the damage, the recoil, the number of shots and the cone on the bullet.
---------------------------------------------------------*/
function SWEP:ShootBulletInformation()

	local CurrentDamage
	local CurrentRecoil
	local CurrentCone

	if self.Weapon:GetDTBool(3) then
		CurrentDamage = self.Primary.Damage * self.data.Damage * DamageMul:GetFloat()
		CurrentRecoil = self.Primary.Recoil * self.data.Recoil * RecoilMul:GetFloat()
		CurrentCone = self.Primary.Cone * self.data.Cone
	else
		CurrentDamage = self.Primary.Damage * DamageMul:GetFloat()
		CurrentRecoil = self.Primary.Recoil * RecoilMul:GetFloat()
		CurrentCone = self.Primary.Cone
	end

	if self.Owner:IsNPC() then
		self:ShootBullet(CurrentDamage, CurrentRecoil, self.Primary.NumShots, self.Primary.Cone)
		return
	end

	// When we have collected some fuel, we do a lot of damage! >:D
	if self.Owner:GetNetworkedInt("Fuel") > 0 then
		CurrentDamage = CurrentDamage * 1.25
	end


	// Player is not on the ground
	if not self.Owner:IsOnGround() then
		// Player is aiming
		if (self.Weapon:GetDTBool(1)) then
			self:ShootBullet(CurrentDamage, CurrentRecoil, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil), math.Rand(-1, 1) * (CurrentRecoil), 0))
		// Player is not aiming
		else
			self:ShootBullet(CurrentDamage, CurrentRecoil * 2.5, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil * 2.5), math.Rand(-1, 1) * (CurrentRecoil * 2.5), 0))
		end
	// Player is moving
	elseif self.Owner:KeyDown (bit.bor( IN_FORWARD, IN_BACK, IN_MOVELEFT, IN_MOVERIGHT )) then
		// Player is aiming
		if (self.Weapon:GetDTBool(1)) then
			self:ShootBullet(CurrentDamage, CurrentRecoil / 2, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil / 1.5), math.Rand(-1, 1) * (CurrentRecoil / 1.5), 0))
		// Player is not aiming
		else
			self:ShootBullet(CurrentDamage, CurrentRecoil * 1.5, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil * 1.5), math.Rand(-1, 1) * (CurrentRecoil * 1.5), 0))
		end
	// Player is crouching
	elseif self.Owner:Crouching() then
		// Player is aiming
		if (self.Weapon:GetDTBool(1)) then
			self:ShootBullet(CurrentDamage, 0, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil / 3), math.Rand(-1, 1) * (CurrentRecoil / 3), 0))
		// Player is not aiming
		else
			self:ShootBullet(CurrentDamage, CurrentRecoil / 2, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil / 2), math.Rand(-1, 1) * (CurrentRecoil / 2), 0))
		end
	// Player is doing nothing
	else
		// Player is aiming
		if (self.Weapon:GetDTBool(1)) then
			self:ShootBullet(CurrentDamage, CurrentRecoil / 6, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * (CurrentRecoil / 2), math.Rand(-1, 1) * (CurrentRecoil / 2), 0))
		// Player is not aiming
		else
			self:ShootBullet(CurrentDamage, CurrentRecoil, self.Primary.NumShots, CurrentCone)
			self.Owner:ViewPunch(Angle(math.Rand(-0.75, -1.0) * CurrentRecoil, math.Rand(-1, 1) * CurrentRecoil, 0))
		end
	end
end

/*---------------------------------------------------------
   Name: SWEP:ShootEffects()
   Desc: A convenience function to shoot effects.
---------------------------------------------------------*/
function SWEP:ShootEffects()

	if not self.Owner:IsNPC() then
		self:ShootAnimation()
	end

	if (IsValid(self.Owner) and self.Owner:GetViewModel()) then
		self:IdleAnimation(self.Owner:GetViewModel():SequenceDuration())
	end

	local WeaponModel = self.Weapon:GetOwner():GetActiveWeapon():GetClass()

	if (not self.Owner:IsNPC() and self.Weapon:Clip1() < 1) then
		timer.Simple(self.Owner:GetViewModel():SequenceDuration(), function() 
			if self.Owner and self.Owner:Alive() and self.Weapon:GetOwner():GetActiveWeapon():GetClass() == WeaponModel then
				self.ActionDelay = CurTime()
				self:Reload() 
			end
		end)
	end

	self.Owner:MuzzleFlash()						// Crappy muzzle light
	self.Owner:SetAnimation(PLAYER_ATTACK1)				// 3rd Person Animation

	local effectdata = EffectData()
		effectdata:SetOrigin(self.Owner:GetShootPos())
		effectdata:SetEntity(self.Weapon)
		effectdata:SetStart(self.Owner:GetShootPos())
		effectdata:SetNormal(self.Owner:GetAimVector())
		effectdata:SetAttachment(1)

	// Add a timer to solve this problem : in multiplayer, when you aim with the ironsights, tracers, effects, etc. still come from where the barrel is when you don't aim with ironsights
	if ((game.SinglePlayer() and SERVER) or CLIENT) then
	timer.Simple(0, function()
		if not IsValid(self.Owner) then return end
		if (not IsFirstTimePredicted() or not self.Owner:Alive())then return end

		if (self.Shotgun) then
			util.Effect("effect_mad_shotgunsmoke", effectdata)
		else
			util.Effect("effect_mad_gunsmoke", effectdata)
		end
	end)
	end
	// Shell eject
	//timer.Simple(self.ShellDelay, function()
	//	if not self.Owner then return end
	//	if not IsFirstTimePredicted() then return end
	//	if not self.Owner:IsNPC() and not self.Owner:Alive() then return end

	//	local effectdata = EffectData()
	//		effectdata:SetEntity(self.Weapon)
	//		effectdata:SetNormal(self.Owner:GetAimVector())
	//		effectdata:SetAttachment(2)
	//	util.Effect(self.ShellEffect, effectdata)
	//end)

	if self.Owner:IsNPC() then return end

local trace = self.Owner:GetEyeTrace()

	if trace.HitPos:Distance(self.Owner:GetShootPos()) < 250 and self.Shotgun then
		if trace.Entity:GetClass() == "prop_door_rotating" and (SERVER) then
            trace.Entity:Fire("open", "", 0.1)
			trace.Entity:Fire("unlock", "", 0.1)

			local pos = trace.Entity:GetPos()
			local ang = trace.Entity:GetAngles()
			local model = trace.Entity:GetModel()
			local skin = trace.Entity:GetSkin()

			trace.Entity:SetNotSolid(true)
			trace.Entity:SetNoDraw(true)

			local function ResetDoor(door, fakedoor)
				door:SetNotSolid(false)
				door:SetNoDraw(false)
				fakedoor:Remove()
			end

			local push =(self.Owner:GetPos()):Normalize()
			local ent = ents.Create("prop_physics")

			ent:SetPos(pos)
			ent:SetAngles(ang)
			ent:SetModel(model)
			
			if(skin) then
				ent:SetSkin(skin)
			end

			ent:Spawn()
			timer.Simple( 25 , function() ResetDoor(trace.Entity, ent) end)

		end
	end

	// Crosshair effect
	if ((game.SinglePlayer() and SERVER) or CLIENT) then
		self.Weapon:SetNetworkedFloat("LastShootTime", CurTime())
	end
end


/*---------------------------------------------------------
   Name: SWEP:ShootFire()
   Desc: Shoot fire bullets.
---------------------------------------------------------*/
function SWEP:ShootFire(attacker, tr, dmginfo)

	self.Owner:SetNetworkedInt("Fuel", math.Clamp(self.Owner:GetNetworkedInt("Fuel") - (math.random(1, 3) / self.Primary.NumShots), 0, 100))

	local effectdata = EffectData()
	effectdata:SetOrigin(tr.HitPos)
	effectdata:SetNormal(tr.HitNormal)
	effectdata:SetScale(20)
	util.Effect("effect_mad_firehit", effectdata)

	util.Decal("FadingScorch", tr.HitPos + tr.HitNormal, tr.HitPos - tr.HitNormal)

	local random = (1 / self.Primary.Delay) * (self.Primary.NumShots * (self.Primary.NumShots / 4))

	if math.random(0, random) < 1 then
		if tr.Entity:GetPhysicsObject():IsValid() and not tr.Entity:IsPlayer() then
			tr.Entity:Ignite(math.random(5, 20), 0)

			local tracedata = {}
			tracedata.start = tr.HitPos
			tracedata.endpos = Vector(tr.HitPos.x, tr.HitPos.y, tr.HitPos.z - 10)
			tracedata.filter = tr.HitPos
			local tracedata = util.TraceLine(tracedata)

			if tracedata.HitWorld then
				local fire = ents.Create("env_fire")
				fire:SetPos(tr.HitPos)
				fire:SetKeyValue("health", math.random(5, 15))
				fire:SetKeyValue("firesize", "8")
				fire:SetKeyValue("fireattack", "10")
				fire:SetKeyValue("damagescale", "1.0")
				fire:SetKeyValue("StartDisabled", "0")
				fire:SetKeyValue("firetype", "0")
				fire:SetKeyValue("spawnflags", "128")
				fire:Spawn()
				fire:Fire("StartFire", "", 0)
			end
		end
	end
end


/*---------------------------------------------------------
   Name: SWEP:ShootAnimation()
---------------------------------------------------------*/
function SWEP:ShootAnimation()

	// Too lazy to create a table :)
	local AllowDryFire = self.Owner:GetActiveWeapon():GetClass() == ("weapon_mad_deagle") 
				   or self.Owner:GetActiveWeapon():GetClass() == ("weapon_mad_usp") 
				   or self.Owner:GetActiveWeapon():GetClass() == ("weapon_mad_usp_match")

	if (self.Weapon:Clip1() <= 0) then
		if (AllowDryFire) then
			if self.Weapon:GetDTBool(3) and self.Type == 2 then
				self.Weapon:SendWeaponAnim(ACT_VM_DRYFIRE_SILENCED)	// View model animation
			else
				self.Weapon:SendWeaponAnim(ACT_VM_DRYFIRE) 		// View model animation
			end
		elseif self.Weapon:GetDTBool(3) and self.Type == 2 then
			self.Weapon:SendWeaponAnim(ACT_VM_PRIMARYATTACK_SILENCED) 	// View model animation
		else
			self.Weapon:SendWeaponAnim(ACT_VM_PRIMARYATTACK) 		// View model animation
		end
	else
		if self.Weapon:GetDTBool(3) and self.Type == 2 then
			self.Weapon:SendWeaponAnim(ACT_VM_PRIMARYATTACK_SILENCED) 	// View model animation
		else
			self.Weapon:SendWeaponAnim(ACT_VM_PRIMARYATTACK) 		// View model animation
		end
	end
end

/*---------------------------------------------------------
   Name: SWEP:ShootBullet()
   Desc: A convenience function to shoot bullets.
---------------------------------------------------------*/
local TracerName = "Tracer"

function SWEP:ShootBullet(damage, recoil, num_bullets, aimcone)

	num_bullets 		= num_bullets or 1
	aimcone 			= aimcone or 0

	self:ShootEffects()

	if self.Tracer == 1 then
		TracerName = "Ar2Tracer"
	elseif self.Tracer == 2 then
		TracerName = "AirboatGunHeavyTracer"
	else
		TracerName = "Tracer"
	end
	
	local bullet = {}
		bullet.Num 		= num_bullets
		bullet.Src 		= self.Owner:GetShootPos()			// Source
		bullet.Dir 		= self.Owner:GetAimVector()			// Dir of bullet
		bullet.Spread 	= Vector(aimcone, aimcone, 0)			// Aim Cone
		bullet.Tracer	= 1							// Show a tracer on every x bullets
		bullet.TracerName = TracerName
		bullet.Force	= damage * 0.5					// Amount of force to give to phys objects
		bullet.Damage	= damage
		bullet.Callback	= function(attacker, tr, dmginfo) 
						if not self.Owner:IsNPC() and self.Owner:GetNetworkedInt("Fuel") > 0 then
							self:ShootFire(attacker, tr, dmginfo) 
						end

						return self:RicochetCallback_Redirect(attacker, tr, dmginfo) 
					  end

	self.Owner:FireBullets(bullet)

	// Realistic recoil. Only on snipers and shotguns. Disable for the admin gun because if you put the max damage, you'll fly like you never fly!
	if (SERVER and (self.Sniper or self.Shotgun) and not self.Owner:GetActiveWeapon():GetClass() == ("weapon_mad_admin")) then
		self.Owner:SetVelocity(self.Owner:GetAimVector() * -(damage * num_bullets))
	end

	// Recoil
	if (not self.Owner:IsNPC()) and ((game.SinglePlayer() and SERVER) or (not game.SinglePlayer() and CLIENT)) then
		local eyeangle 	= self.Owner:EyeAngles()
		eyeangle.pitch 	= eyeangle.pitch - recoil
		self.Owner:SetEyeAngles(eyeangle)
	end
end

/*---------------------------------------------------------
   Name: SWEP:BulletPenetrate()
---------------------------------------------------------*/
function SWEP:BulletPenetrate(bouncenum, attacker, tr, dmginfo, isplayer)

	if (CLIENT) then return end

	local MaxPenetration

	if self.Primary.Ammo == "AirboatGun" then // 5.56MM Ammo
		MaxPenetration = 18
	elseif self.Primary.Ammo == "Gravity" then // 4.6MM Ammo
		MaxPenetration = 8
	elseif self.Primary.Ammo == "AlyxGun" then // 5.7MM Ammo
		MaxPenetration = 12
	elseif self.Primary.Ammo == "Battery" then // 9MM Ammo
		MaxPenetration = 14
	elseif self.Primary.Ammo == "StriderMinigun" then // 7.62MM Ammo
		MaxPenetration = 20
	elseif self.Primary.Ammo == "SniperPenetratedRound" then // .45 Ammo
		MaxPenetration = 16
	elseif self.Primary.Ammo == "CombineCannon" then // .50 Ammo
		MaxPenetration = 20
	else
		MaxPenetration = 16
	end

	local DoDefaultEffect = true
	// Don't go through metal, sand or player
	if ((tr.MatType == MAT_METAL and self.Ricochet) or (tr.MatType == MAT_SAND) or (tr.Entity:IsPlayer())) then return false end

	// Don't go through more than 3 times
	if (bouncenum > 3) then return false end
	
	// Direction (and length) that we are going to penetrate
	local PenetrationDirection = tr.Normal * MaxPenetration
	
	if (tr.MatType == MAT_GLASS or tr.MatType == MAT_PLASTIC or tr.MatType == MAT_WOOD or tr.MatType == MAT_FLESH or tr.MatType == MAT_ALIENFLESH) then
		PenetrationDirection = tr.Normal * (MaxPenetration * 2)
	end
		
	local trace 	= {}
	trace.endpos 	= tr.HitPos
	trace.start 	= tr.HitPos + PenetrationDirection
	trace.mask 		= MASK_SHOT
	trace.filter 	= {self.Owner}
	   
	local trace 	= util.TraceLine(trace) 
	
	// Bullet didn't penetrate.
	if (trace.StartSolid or trace.Fraction >= 1.0 or tr.Fraction <= 0.0) then return false end
	
	// Damage multiplier depending on surface
	local fDamageMulti = 0.5
	
	if (tr.MatType == MAT_CONCRETE) then
		fDamageMulti = 0.3
	elseif (tr.MatType == MAT_WOOD or tr.MatType == MAT_PLASTIC or tr.MatType == MAT_GLASS) then
		fDamageMulti = 0.8
	elseif (tr.MatType == MAT_FLESH or tr.MatType == MAT_ALIENFLESH) then
		fDamageMulti = 0.9
	end
		
	// Fire bullet from the exit point using the original trajectory
	local bullet = 
	{	
		Num 		= 1,
		Src 		= trace.HitPos,
		Dir 		= tr.Normal,	
		Spread 	= Vector(0, 0, 0),
		Tracer	= 1,
		TracerName 	= "effect_mad_penetration_trace",
		Force		= 5,
		Damage	= (dmginfo:GetDamage() * fDamageMulti),
		HullSize	= 2
	}
	
	bullet.Callback   = function(a, b, c) if (self.Ricochet) then return self:RicochetCallback(bouncenum + 1, a, b, c) end end
	
	timer.Simple(0.05, function()
		if not IsFirstTimePredicted() then return end
		attacker.FireBullets(attacker, bullet, true)
	end)

	return true
end

/*---------------------------------------------------------
   Name: SWEP:RicochetCallback()
---------------------------------------------------------*/
function SWEP:RicochetCallback(bouncenum, attacker, tr, dmginfo)

	if (CLIENT) then return end

	if (not self) then return end

	local DoDefaultEffect = true
	if (tr.HitSky) then return end
	
	// Can we go through whatever we hit?
	if (self.Penetration) and (self:BulletPenetrate(bouncenum, attacker, tr, dmginfo)) then
		return {damage = true, effects = DoDefaultEffect}
	end
	
	// Your screen will shake and you'll hear the savage hiss of an approaching bullet which passing if someone is shooting at you.
	if (tr.MatType != MAT_METAL) then
		if (SERVER) then
			util.ScreenShake(tr.HitPos, 5, 0.1, 0.5, 64)
			sound.Play("Bullets.DefaultNearmiss", tr.HitPos, 250, math.random(110, 180))
		end

		if self.Tracer == 1 or self.Tracer == 2 then
			local effectdata = EffectData()
				effectdata:SetOrigin(tr.HitPos)
				effectdata:SetNormal(tr.HitNormal)
				effectdata:SetScale(20)
			util.Effect("AR2Impact", effectdata)
		elseif self.Tracer == 3 then
			local effectdata = EffectData()
				effectdata:SetOrigin(tr.HitPos)
				effectdata:SetNormal(tr.HitNormal)
				effectdata:SetScale(20)
			util.Effect("StunstickImpact", effectdata)
		end

		return 
	end

	if (self.Ricochet == false) then return {damage = true, effects = DoDefaultEffect} end
	
	if (bouncenum > self.MaxRicochet) then return end
	
	// Bounce vector
	local trace = {}
	trace.start = tr.HitPos
	trace.endpos = trace.start + (tr.HitNormal * 16384)

	local trace = util.TraceLine(trace)

 	local DotProduct = tr.HitNormal:Dot(tr.Normal * -1) 
	
	local bullet = 
	{	
		Num 		= 1,
		Src 		= tr.HitPos + (tr.HitNormal * 5),
		Dir 		= ((2 * tr.HitNormal * DotProduct) + tr.Normal) + (VectorRand() * 0.05),
		Spread 	= Vector(0, 0, 0),
		Tracer	= 1,
		TracerName 	= "effect_mad_ricochet_trace",
		Force		= dmginfo:GetDamage() * 0.25,
		Damage	= dmginfo:GetDamage() * 0.5,
		HullSize	= 2
	}
		
	// Added conditional to stop errors when bullets ricochet after weapon switch
	bullet.Callback  	= function(a, b, c) if (self.Ricochet) then return self:RicochetCallback(bouncenum + 1, a, b, c) end end

	timer.Simple(0.05, function()
		if not IsFirstTimePredicted() then return end
		attacker.FireBullets(attacker, bullet, true)
	end)
	
	return {damage = true, effects = DoDefaultEffect}
end

/*---------------------------------------------------------
   Name: SWEP:RicochetCallback_Redirect()
---------------------------------------------------------*/
function SWEP:RicochetCallback_Redirect(a, b, c)
 
	return self:RicochetCallback(0, a, b, c) 
end

/*---------------------------------------------------------
   Name: SWEP:CanPrimaryAttack()
   Desc: Helper function for checking for no ammo.
---------------------------------------------------------*/
function SWEP:CanPrimaryAttack()

	// Clip is empty or you're under water
	if (self.Weapon:Clip1() <= 0) or (self.Owner:WaterLevel() > 2) then
		self.Weapon:SetNextPrimaryFire(CurTime() + 0.5)
//		self.Weapon:EmitSound("Default.ClipEmpty_Pistol")
		return false
	end

	// You're sprinting or your weapon is holsted
	if not self.Owner:IsNPC() and (self.Owner:KeyDown(IN_SPEED) or self.Weapon:GetDTBool(0) or self.Owner:WaterLevel() > 2) then
		self.Weapon:SetNextPrimaryFire(CurTime() + 0.5)
		return false
	end

	return true
end

/*---------------------------------------------------------
   Name: SWEP:CanSecondaryAttack()
   Desc: Helper function for checking for no ammo.
---------------------------------------------------------*/
function SWEP:CanSecondaryAttack()

	// Clip is empty or you're under water
	if (self.Weapon:Clip2() <= 0) then
		self.Weapon:SetNextSecondaryFire(CurTime() + 0.5)
//		self.Weapon:EmitSound("Default.ClipEmpty_Pistol")
		return false
	end

	// You're sprinting or your weapon is holsted
	if not self.Owner:IsNPC() and (self.Owner:KeyDown(IN_SPEED) or self.Weapon:GetDTBool(0) or self.Owner:WaterLevel() > 2) then
		self.Weapon:SetNextSecondaryFire(CurTime() + 0.5)
		return false
	end

	return true
end


(User was banned for this post ("crap all caps/undescriptive thread title" - postal))

Put this in your server.cfg

sv_kickerrornum 0

While this will temporarily work, it’d be even better to actually fix the error.

This happens with the Fists swep too IIRC.

It happens when people die