Crash Doctor - Bannerlord Crash Fixer and Save Cleaner

📄 Latest changelog article: https://www.nexusmods.com/mountandblade2bannerlord/articles/1705

Why install Crash Doctor?

Crash Doctor is an automatic crash fixer, save cleaner, and optimization tool for Mount & Blade II: Bannerlord 1. 2. 12 / 1. 3. 15 / 1. 4. 6.

• []Prevents mod and engine crashes so you can keep playing[/]

  []Repairs corrupted and bloated saves[/]

  []Improves performance and stability in heavily modded setups[/]

  Compatible with: Native, War Sails, The Old Realms, Banner Kings, Realm of Thrones, Europe 1100, Anno Domini, Eastern Europe 1259, Diplomacy, Serve as Soldier, and more.

  Available in 4 languages: English, Русский, 简体中文 and Türkçe.

  Crash Doctor — Your Personal Mechanic for Bannerlord

  Crash Fixer, Save Cleaner & System Optimization

  Anti-Crash Guard — Runtime Crash Fixes

  Crash Doctor fixes Bannerlord runtime crashes caused by mods and engine issues before they can crash the game to desktop.

  Crash protection for:

  • []AI hourly tick / wages / food / issue completion — fixes crashes caused by orphaned or dangling units left behind by other mods during daily ticks or campaign updates[/]

    []Garrison save-load issues — fixes crashes caused by invalid garrison left behind after a town or castle are captured[/]

    []Formation battle AI — catches a common vanilla NullReference in BehaviorFlank during battles so combat can continue[/]

    []Victory cheer — handles an access violation in AgentVictoryLogic, allowing the battle to finish normally[/]

    []Inventory item use — fixes crashes when using items (e.g. reading a skill book)[/]

    []UI buttons — a global fallback that prevents crashes triggered by any interface button interaction[/]

  Emergency systems:
  • []Emergency save — on unhandled exceptions, attempts a last-resort save to CrashDoctor_Emergency_<timestamp>.sav before the game closes[/]

    []Harmony patch conflict detection — flags mods that patch the same method, helping identify potential conflicts[/]

    Crash Analyzer

    Explains Bannerlord crashes in plain English and provides a prioritized list of fix steps.

    Crash analyzer uses 96+ YAML rules to diagnose crashes across vanilla and any modded setups (TOR, BUTR/BLSE/Harmony/MCM), as well as GPU, DirectX, native runtime, and save-load issues.

    It detects common late-game and modded scenarios such as KingdomDecision orphan clans, TOR Assimilation issues, governor change, asset corruption, and mod-stack conflicts.

    Each crash log (repo