ButterLib

⭐ ⭐⭐⭐⭐ (57,427 endorsements) 📥 4.5M downloads 📌 vv2.10.4 📅 8/27/2020
🟡 Updated this year

By BUTR Team · Utilities

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 7/21/2026 📅 Created: 8/27/2020

🔍 Analysis

  • 👍 1.3% endorsement rate — high engagement, a strong quality signal
  • 🏆 #2 of 28 Utilities mods in this game by downloads

📋 About This Mod

Extension library for Mount & Blade II: Bannerlord containing common functions for modification development.

Sources available at GitHub!

Installation

This module should be one of the highest in loading order and placed above native modules. Ideally, it should be second in load order after Bannerlord. Harmony

Important information for v1. 2. 0

ButterLib's and BEW Crash Reporters are broken by TW. We are not able to do something here via ButterLib, so we suggest to download BLSE v1. 4. 0 or higher from NexusMods to make Crash Reports work again!

For Players

This mod is a dependency mod that does not provide anything by itself. You need to additionaly install mods that use it.

For Modders

Distributed libraries:

ButterLib 2. 1. 0 distributes with itself some libraries. Unfortunately, the game has a strict dependency system and if the versions don't match the game will crash. So here's the list of packages:

  • []Microsoft. Extensions. DependencyInjection - 2. 0. 0

    []Microsoft. Extensions. DependencyInjection. Abstractions - 2. 0. 0

    []Microsoft. Extensions. Logging - 2. 0. 0

    []Microsoft. Extensions. Logging. Abstractions - 2. 0. 0

    []Microsoft. Extensions. Options - 2. 0. 0

    []Microsoft. Extensions. Primitives - 2. 0. 0

    • []System. Reflection. Metadata - 5. 0. 0

      []System. Collections. Immutable - 5. 0. 0

      []System. Memory - 4. 5. 4

      []System. Buffers - 4. 5. 4

      []System. Runtime. CompilerServices. Unsafe - 4. 5. 3

      • []Serilog - 2. 10. 0

        []Serilog. Extensions. Logging - 3. 1. 0

        []Serilog. Sinks. File - 5. 0. 0

      We are unfortunately enforcing everyone to use exactly these versions. Microsoft. Extensions. are 2. 0. 0 because Serilog is compiling against 2. 0. 0 versions of the libraries and the game is enforcing exact version match! Same for System. Reflection. Metadata, System. Runtime. CompilerServices. Unsafe is enforcing it.

      Highlighted features:

      • []ExceptionHandler - Catches all exceptions in BEW style and gives the ability to save the crash report

        []CrashUploader - Uploads those crash reports to https://butr.dev for creating tiny url's for sharing!

        []CampaignIdentifier - Associates unique string ID with every campaign based on the initial character.

        []DistanceMatrix - A generic class that pairs given objects of type MBObject and for each

        pair calculates the distance between the objects that formed it.[]DelayedSubModule - Execute code after specific SubModule method.

        []SubModuleWrappers - Wraps MBSubModulebase for easier calling of protected internal metods.

      Check the /Articles section in the documentation to see all available features!

      Troubleshooting

      Unblocking DLL's

      You may need to right click on every Bannerlord. ButterLib.\bin\Win64_Shipping_Client\*.dll

      files, click Properties, and click Unblock if you extracted the zip file with Windows Explorer or other programs that try to secure extracted files.

      Harmony installation issues:

      Check Harmony's Troubleshooting for more info on how to fix it.

📊 Mod Details

Game
Mountandblade2bannerlord Mods
Author
BUTR Team
Version
v2.10.4
Downloads
4,496,654
Endorsements
57,427
Category
Utilities
Created
8/27/2020
Updated
7/21/2026

🔧 How to Install Mountandblade2bannerlord Mods

Download from Nexus Mods.

📖 Full step-by-step install guide for Mountandblade2bannerlord →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Mountandblade2bannerlord commands, item IDs, and more.

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