TTT Server weapon switching error

[CaptainChaos]

Every time I try to equip a weapon on my TTT server it gives this error:

terrortown\gamemode\cl_wepswitch.lua:101 attempt to call method 'ammo1' (a nil value)(hook: HUDpaint)

What could be causing this?
I have not added anything to the server recently.

[Steeze]

Are you using a custom weapon base? Ammo1 is called from the TTT weapon base.

[Acecool]

On your HUDPaint, you can do something like this:

[lua]// Define a short variable to contain the player, we're going to use it a bit...
local _p = LocalPlayer( );

// If the player isn't valid, they're not fully loaded; stop here
if ( !IsValid( _p ) ) then return; end

// Lets grab the active weapon, this is nil when the player first joins and can be nil throughout
local _w = _p:GetActiveWeapon( );

// So we check to make sure. If it isn't valid, or the weapon doesn't have the function Ammo1 then stop here.
if ( !IsValid( _w ) || !_w.ammo1 ) then return; end

//
// Rest of the code goes below this
//
[/lua]