DupeFix Project - Fixing Duplication Bugs in Minecraft

DupeFix Project is a specialized mod for Minecraft version 1.12.2 designed to fix various item duplication bugs in other mods.

The main goal of this project is to enable the use of multiple mods in modpacks and on servers without the need to ban problematic items. Many of the fixed mods are no longer updated or don't receive support for version 1.12.2, so this project helps maintain their functionality.

Solving Launch Issues

If the game crashes on startup, there's likely a Mixin version conflict with other installed mods. It's recommended to install Mixin 0.7-0.8 compatibility to prevent such situations.

If the problem persists, create an issue on GitHub.

List of Fixed Duplication Bugs

Basic Bugs

Duplication via donkeys Duplication via cows

Blood Magic

Sigil of Holding duplication bug Sentient Armor duplication bug

Botania

Virus donkey duplication bug

Project Red: World

Backpack duplication bug

Spice of Life

Lunch bag/box duplication bug

Tinkers' Construct

Tool Forge duplication bug

Thaumcraft

Arcane Workbench duplication Primordial Pearl duplication bug Collector Infusion Enchantment duplication Arcane Stone duplication bug Multiplayer Arcane Workbench duplication Magic Mirror duplication bug Thaumcraft entities drops duplication bug

Thaumic Wonders

Flying Carpet duplication bug

Tiny Progressions

Big Pouch duplication bug

Mekanism

Personal Chest duplication bug Bin duplication bug

Nether Chest

Unstackable items duplication bug

Industrial Foregoing

Conveyor Belt duplication bug

Extra Utilities

Machine Container duplication bug

Actually Additions

Shulker Box duplication bug

The Farlanders

Looter Thorns Enchantment duplication bug

Forestry

Backpack duplication bug

Thermal Expansion

Satchel duplication bug Cache duplication bug

Arcane Archives

Radiant Crafting Table duplication bug Containers duplication bug

Tinkers' Complement

Chisel duplication bug

Industrial Craft 2

Industrial Crafter duplication bug

Quark

Pickarang duplication bug

Iron Backpacks

Recipe duplication bug Swap duplication bug