Kleiders Custom Renderer API Needed by kleidersfix-1.0.0.jar
requiredMatching file found Matched file: Kleiders Custom Renderer API 7.2.0 1.21.1.jar
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CurseForge · Minecraft mod
KleidersFix
Fixes a nullpointerexception error with Kleiders Custom Renderer API.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which KleidersFix release should I use?
Latest stable file kleidersfix-1.0.0.jar
Game version 1.21.1
Loader NeoForge
kleidersfix-1.0.0.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is KleidersFix 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 NeoForge
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.
What else does kleidersfix-1.0.0.jar need?
kleidersfix-1.0.0.jar. Change the file and its required mods may change too.
Install Kleiders Custom Renderer API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add KleidersFix without breaking your instance.
Built for kleidersfix-1.0.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use kleidersfix-1.0.0.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Kleiders Custom Renderer API first. We found matching files for this game-version and loader setup.
- 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 kleidersfix-1.0.0.jar. It opens that exact file at the source.
About this project
What does KleidersFix add?
The crash is in kleiders_custom_renderer (Kleiders Custom Renderer API), specifically PlayerVariablesSyncMessage.handleData. The Kleiders Custom Renderer API mod syncs custom player variables to clients via a packet that references an entity by its ID. When the referenced entity is no longer in the level (e.g. it died and got removed from the world before the sync packet was processed), level.getEntity(id) returns null, and the mod doesn't null check that before calling .getData(...) on it, straight NullPointerException, which then errors out the network task handling and can desync/kick the client. This is a mod to remedy that.
Project description from CurseForge.
Pick your setup
KleidersFix by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
KleidersFix versions and loaders
kleidersfix-1.0.0.jar
30 Jun 2026
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · matched Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
Looking for an older file? The official CurseForge project page is in Resources.
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