Good day, random person on internet)

I load only your mod and base, go to mod settings - Advanced Settings - Efficiency module - Pollution scaling pattern - changing this to Liner, Constant or Exponential and crash.

Failed to load mods: module-config/functions.lua:248: attempt to perform arithmetic on field '?' (a nil value)
stack traceback:
module-config/functions.lua:248: in function <module-config/functions.lua:243>
(...tail calls...)
module-config/functions.lua:151: in function 'generate_effects'
module-config/variables.lua:137: in main chunk
[C]: in function 'require'
module-config/prototypes/items.lua:2: in main chunk
[C]: in function 'require'
module-config/data-updates.lua:1: in main chunk

Most of the time I play with SA, but I do not think it affects modules, except t3 recipe.

Also I notice, T4 Efficiency module require 5 special resources, spoilage, while all others T4 only 1. Is this intentional?

Interesting, I'll check it out when I can (It's finals week soon lol). As for the special resources, that is intentional as in space age efficiency modules t3 require 5 spoilage.

I see now where I was getting wrong. With your mod and SA together installed, your mod changes T3 Efficiency recipe to 1 spoilage, instead of 5, probably some bug too.

Oh interesting, yeah probably just a tiny typo on my end. I'll be sure to fix that when I'm done with finals.

Both the crashes (caused by using basic settings on an effect for a module that doesn't have said effect by default, because the basic settings are calculated based on existing effects), and the incorrect recipes are now fixed.