Better Mob Combat Fix [BMCFIX]

Fixes Better Mob Combat compatibility with Better Combat 1.9.0

2.0K Downloads

fabricforgeutility

Rent Server with this Mod

About this Mod

Better Mob Combat Fix

Fixes Better Mob Combat compatibility with Better Combat 1.9.0

The Problem

Better Combat 1.9.0 (latest for 1.20.1) made breaking changes:

Removed CompatibilityFlags.firstPersonRender() method
Moved PehkuiHelper from net.bettercombat.compatibility to net.bettercombat.client.compat

Better Mob Combat stopped updating and still uses old methods/paths, breaking mob attack animations and Pehkui compatibility.

How It Works

This mod uses two mixins to fix both issues:

Mixin 1: Intercepts CompatibilityFlags.firstPersonRender() calls and returns false

Mixin 2: Overwrites BMCPehkuiHelper.load() to use the new PehkuiHelper location

Technical:

@Redirect on Mob.playAttackAnimation() → returns false for removed method
@Overwrite on BMCPehkuiHelper.load() → uses net.bettercombat.client.compat.PehkuiHelper

Available Versions

Better Mob Combat Fix [BMCFIX] 1.0.2release

MC 1.20.1fabric

March 9, 2026

Better Mob Combat Fix [BMCFIX] 1.0.2release

MC 1.20.1forge

March 9, 2026

Better Mob Combat Fix [BMCFIX] 1.0.1release

MC 1.20.1forge

March 9, 2026

Better Mob Combat Fix [BMCFIX] 1.0.0release

MC 1.20.1forge

March 8, 2026

How to Install Better Mob Combat Fix [BMCFIX] on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).

Install Mod

Open the mod browser in the dashboard and search for "Better Mob Combat Fix [BMCFIX]". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforge

Minecraft Versions

1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Better Mob Combat Fix [BMCFIX] server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.

Is Better Mob Combat Fix [BMCFIX] compatible with fabric and forge?

Better Mob Combat Fix [BMCFIX] officially supports fabric, forge for Minecraft 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Better Mob Combat Fix [BMCFIX] – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Better Mob Combat Fix [BMCFIX] consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.