ModsJava
Copper Age Backport Duplicate Copper Armor Material Fix
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
A small addon mod that fixes duplicate Copper armor material crash experienced when Copper Age Backport is installed with other mods that add copper armor.
⬇ Download on ModrinthCopper Age Backport Duplicate Copper Armor Material Fix
A small addon mod that fixes duplicate Copper armor material crash experienced when Copper Age Backport is installed with other mods that add copper armor.
Compatibility:
- Minecraft: 1.21.1
- Mod Loader: Neoforge 21.1.248
- Required dependency: Copper Age Backport by Smallinger
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Ships as copperagebackportduplicatematerialfix-neoforge-0.1.jar — drop this file into the mods folder
- Download size: 4 KB
- Download link checked 15 Oct 2026 — working
These come from our own check of the pack file, not from the source page.