fix nil errors part one

lua/arccw/shared/sh_physbullet2.lua

@@ -202,6 +202,8 @@ net.Receive("arccw_sendbullet", function(len, ply)
 
     if game.SinglePlayer() then
         ent = net.ReadEntity()
+    else
+        ent = weapon:GetOwner()
     end
 
     local bullet = {
@@ -214,7 +216,7 @@ net.Receive("arccw_sendbullet", function(len, ply)
         Dead = false,
         Damaged = {},
         Drag = drag,
-        Attacker = ent or weapon:GetOwner(),
+        Attacker = ent,
         Gravity = grav,
         Profile = profile,
         PhysBulletImpact = impact,

lua/effects/arccw_muzzleeffect.lua

@@ -3,6 +3,7 @@ function EFFECT:Init(data)
     local wpn = data:GetEntity()
 
     if !IsValid(wpn) then return end
+    if !wpn.ArcCW then return end
 
     local muzzle = wpn.MuzzleEffect
     local overridemuzzle = wpn:GetBuff_Override("Override_MuzzleEffect")

lua/weapons/arccw_base/cl_customize2.lua

@@ -614,9 +614,11 @@ function SWEP:CreateCustomize2HUD()
             self2.AlreadySet = true
         end
 
-        local scroll = self2:GetScroll()
+        if IsValid(self.Inv_Scroll) then
+            local scroll = self2:GetScroll()
 
-        self.Inv_Scroll[self.Inv_SelectedSlot or 0] = scroll
+            self.Inv_Scroll[self.Inv_SelectedSlot or 0] = scroll
+        end
     end
 
     scroll_2.btnUp.Paint = function(span, w, h)
@@ -1450,7 +1452,7 @@ function SWEP:CreateCustomize2HUD()
 
                 local txt = (translate("ui.toggle"))
                 local catttbl = ArcCW.AttachmentTable[att]
-                if catttbl and catttbl.ToggleStats[self.Attachments[slot].ToggleNum]
+                if catttbl and IsValid(self.Attachments) and catttbl.ToggleStats[self.Attachments[slot].ToggleNum]
                         and catttbl.ToggleStats[self.Attachments[slot].ToggleNum].PrintName then
                     txt = try_translate(catttbl.ToggleStats[self.Attachments[slot].ToggleNum].PrintName)
                 end
@@ -1492,7 +1494,11 @@ function SWEP:CreateCustomize2HUD()
 
                 draw.RoundedBox(cornerrad, 0, 0, w, h, col)
                 surface.SetDrawColor(col2.r, col2.g, col2.b)
-                surface.SetMaterial(self.Attachments[slot].ToggleLock and iconlock or iconunlock)
+                if IsValid(self.Attachments) then
+                    surface.SetMaterial(self.Attachments[slot].ToggleLock and iconlock or iconunlock)
+                else
+                    surface.SetMaterial(iconunlock)
+                end
                 surface.DrawTexturedRect(4, 4, w - 8, h - 8)
             end
 

lua/weapons/arccw_base/sh_attach.lua

@@ -669,10 +669,15 @@ function SWEP:GetMuzzleDevice(wm)
     if self:GetInUBGL() then
         local _, slot = self:GetBuff_Override("UBGL")
 
+        local muzz2 = nil
+        if IsValid(self.Attachments) then
+            muzz2 = (self.Attachments[slot].WMuzzleDeviceElement or {}).Model
+        end
+
         if wm then
-            muzz = (self.Attachments[slot].WMuzzleDeviceElement or {}).Model or muzz
+            muzz = muzz2 or muzz
         else
-            muzz = (self.Attachments[slot].VMuzzleDeviceElement or {}).Model or muzz
+            muzz = muzz2 or muzz
         end
     end