Hello, I had an issue before where I tried to add an MP weapon, having no sound, then trying to fix it, and then xmodels and fx missing, which I fixed by either preaching or just having the xmodels in the map somewhere. One issue remains with the hud_icon_svt40 missing, which is a material. Now, I added custom images before, but is there a 'correct' way to include this? I'm a total novice at scripting so I'd appreciate something easy to follow.
 
Thanks!

in your modbuilder / .csv: material,YOURMATERIALNAME
 
In your mod: (I would put it in _zombiemode along the others) PrecacheShader( "YOURMATERIALNAME" );
 
But all these precaching would be solved if you just add the weapon to your mod.
 

1. Add your weapon to your modbuilder / .csv:

weapon,sp\YOURWEAPONNAME
sound,YOURSOUNDALIAS,,all_sp

2. Add your weapon file to folder:
Call of Duty World at War\mods\YOURMOD\weapons\sp

3. Add your weapon in _zombiemode_weapons, search at init_weapons() :
add_zombie_weapon( "YOURWEAPONNAME", "Press & hold &&1 to buy NAME [Cost: 2000]", 2000, "" );

4. Add your weapon in dlc3_code, search at include_weapons() :
include_weapon( "YOURWEAPONNAME" );

Old tutorial that should work fine: