Back to 9Minecraft
Wiki 9Minecraft Wiki 9Minecraft
Worldgen Feature Fix Wiki › Guides › Fix Custom Water Lake Generation Crashes

Fix Custom Water Lake Generation Crashes

Why Your World Won't Load

When you use a custom data pack that adds or modifies water lake features, Minecraft may crash during world generation. This happens because the game struggles to parse the feature configuration from your pack. Worldgen Feature Fix Mod intercepts these loading errors and corrects how chunk data is read.

How to Use This Mod

1. Install the mod into your mods folder alongside your custom data pack

2. Load your world as normal—the mod works silently in the background

3. Check the log if generation still fails; the mod will have caught and logged the specific feature causing issues

4. Test chunk generation by exploring new terrain; water lakes should now generate without crashes

The mod doesn't change your data pack or world data. It only fixes how the game engine reads feature definitions. Your custom water lakes will generate exactly as your pack intended, but without the crashes that would normally occur.

If you continue to experience issues, verify your data pack's feature syntax is valid—the mod fixes loading errors, but cannot correct malformed JSON or invalid feature configurations.