I guess that probably why these Facepunch's messed up these steam workshop. Uh...man!

yep, definitely Facepunch's fault
fixed accordly the changes

I'm having the exact same error as well.

@Debiddo, Hello! I'm getting an error due of Garry's Mod updates on March 13th. Here a error console I found.

[Debiddo's Shared Materials] bad argument #5 to CreateConVar (number expected, got string)
1. unknown - lua/autorun/_0x6c6f61646572.lua:19
[Debiddo's Shared Materials] bad argument #6 to CreateConVar (number expected, got string)
1. unknown - lua/autorun/_0x6c6f61646572.lua:19

Hi 🤟🏻☯️Angela☯️🐾 ,
This addon is for modders that need presets for materials, composed of textures that by warp light under shadermodel 2.0 (SM2.0) or higher aim to a NPR-like [github.com] behaviour.
Also fix serve as healing patch and sample for their material workflows.
Personally I made of this addon as mandatory for most of my addons, and without it they'll not render, be a missing texture checkbox or even a wireframe only.

At user level, you can create your own materials and use Sub Material Tool to apply your created materials to any model.

No estaría entendiendo el mod