How to Scan Modded Mobs for Crash Vulnerabilities

Even with crash protection active, certain creatures from third-party mods may still be susceptible to broken damage events. You can run a built-in diagnostic command to scan every registered living mob in your game and spot remaining vulnerabilities before encountering them in survival mode.

Preparing a Test World

1. Create a backup of your world or launch a separate Creative test world so testing does not disrupt normal gameplay.

2. Make sure cheats are enabled. In an existing single-player world without cheats, press Esc, click Open to LAN, set Allow Cheats to ON, and start the LAN world.

3. On a multiplayer server, ensure your account has operator permissions so you can run debug commands.

Running the Mob Scan

1. Press T to open the chat window.

2. Type /dsnnull debug testall and press Enter.

3.

4. Check the chat output and your game log after the scan finishes to see if any registered creatures are flagged as still vulnerable to a null DamageSource crash.

Run this scan whenever you add new creature mods or custom damage mods to your setup so you know right away which mobs require caution.