you changed the t4 speed module (from Porkchop13's mod) to use millerite instead of tungsten carbide but did not change the recycling recipe,
in prototypes\recipe-updates changing :
if mods["modules-t4"] then
-- Replace tungsten-carbide with millerite in the tier 4 speed module recipe if it exists
local recipe = data.raw["recipe"]["speed-module-4"]
if recipe then
for _, ingredient in pairs(recipe.ingredients) do
if ingredient.name == "tungsten-carbide" then
ingredient.name = "millerite"
end
end
end
end
to this:
if mods["modules-t4"] then
-- Replace tungsten-carbide with millerite in the tier 4 speed module recipe if it exists
local recipe = data.raw["recipe"]["speed-module-4"]
if recipe then
for , ingredient in pairs(recipe.ingredients) do
if ingredient.name == "tungsten-carbide" then
ingredient.name = "millerite"
end
end
local recycle = data.raw["recipe"]["speed-module-4-recycling"]
if recycle then
for , results in pairs(recycle.results) do
if results.name == "tungsten-carbide" then
results.name = "millerite"
end
end
end
end
end
fixes the issue but I don't know if there's a better way to do it