CurseForge · Minecraft mod

Duplicate NBT Flattener

Heals level.dat corruption caused by recursively duplicated nbt tags

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Duplicate NBT Flattener release should I use?

Updated 17 days ago

Latest stable file nbtflattener-0.1.1.jar

Game version 1.20.1

Loader Forge

Duplicate NBT Flattener nbtflattener-0.1.1.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is Duplicate NBT Flattener required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release Forge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Duplicate NBT Flattener nbtflattener-0.1.1.jar need?

nbtflattener-0.1.1.jar. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add Duplicate NBT Flattener without breaking your instance.

Built for Duplicate NBT Flattener nbtflattener-0.1.1.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use nbtflattener-0.1.1.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

This file does not list any required mods. Do not add a library just because a different file uses it.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside nbtflattener-0.1.1.jar. It opens that exact file at the source.

About this project

What does Duplicate NBT Flattener add?

Fixes corruption issues related to a severe bug found in interactions between Terrablender and outdated libraries frequently used in mods such as Vanilla Backport. These interactions can cause recursively duplicated surface rules in level.dat preventing the game from loading the world properly. Duplicate NBT Flattener cleans up this corrupted data in level.dat.

This mod does not need Terrablender or Vanilla Backport as dependencies, they are cited as example cases.

Project description from CurseForge.

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