Hytale Mod Troubleshooting - Fix Common Issues

Find solutions to common Hytale mod installation problems below.

Mod Not Appearing in World Settings (Client)

Symptoms: You downloaded a mod but it doesn’t show up in the world settings.

Check	Solution
File location	Ensure mod is in UserData/Mods, not elsewhere
File format	Must be .jar (client) or .zip/.jar (server), not extracted
Main menu	Return to main menu before checking world settings
Game version	Verify mod supports your Hytale version

Correct vs Incorrect Placement (Client)

Correct:

UserData/
└── Mods/
    └── my-mod.jar

Incorrect:

UserData/
└── Mods/
    └── my-mod/
        └── my-mod.jar    ← Extracted into folder

Mod Not Loading (Server)

Symptoms: Mod features don’t appear in-game, no loading message in console.

Check	Solution
File location	Ensure mod is directly in mods/, not a subdirectory
File format	Must be .jar (client) or .zip/.jar (server), not extracted
Server restart	Did you restart after adding the mod?
Console output	Check for error messages during startup

Correct vs Incorrect Placement (Server)

Correct:

mods/
└── my-mod.jar

Incorrect:

mods/
└── my-mod/
    └── my-mod.jar

Server Crashes on Startup

Symptoms: Server exits immediately or shows error stack trace.

Cause	Solution
Incompatible mod	Check mod is for your server version
Missing dependency	Read mod description for required mods
Corrupt file	Re-download the mod
Java version	Ensure Java 25 is installed

To diagnose:

1. Remove all mods
2. Start server (confirm it works)
3. Add mods one at a time
4. Identify which mod causes the crash

Plugin Not Responding to Commands

Symptoms: Plugin loads but commands don’t work.

Check	Solution
Command prefix	Try /pluginname:command
Permissions	Check permissions.json for access
Console output	Look for errors when running command

Version Mismatch

Symptoms: Error about incompatible version.

Hytale requires exact protocol version match between client and server.

Fix	Steps
Update server	Download latest server files
Update client	Let launcher update automatically
Check mod compatibility	Mod may be for different version

Performance Issues After Adding Mods

Symptoms: Lag, slow startup, high RAM usage.

Symptom	Likely Cause	Solution
Slow startup	Many mods loading	Normal — wait longer
In-game lag	Resource-heavy mod	Check mod settings, reduce view distance
High RAM	Large content packs	Increase -Xmx value or reduce mods

See Tips & Tricks for optimization guidance.

Getting Help

If these solutions don’t work:

1. Check mod documentation — Often has specific troubleshooting
2. Search CurseForge comments — Others may have same issue
3. Check server logs — logs/ folder has detailed error information

When asking for help, include:

• Mod name and version
• Server version
• Full error message
• Steps you’ve already tried

Frequently Asked Questions

Why aren’t my Hytale mods showing up?

Most commonly, the mod file is in the wrong location or has been extracted. Ensure:

• Client mods are in UserData/Mods (not a subfolder)
• Server mods are in mods/ (not a subfolder)
• Files remain as .jar or .zip — do not extract them
• You’re on the main menu before checking world settings (client)
• The server has been restarted after adding mods (server)

Why does my Hytale server crash with mods?

Server crashes are usually caused by incompatible mods, missing dependencies, or corrupt files. To diagnose: remove all mods, confirm the server starts, then add mods back one at a time to identify the culprit. Check the mod’s CurseForge page for required dependencies and version compatibility.

How do I check mod version compatibility?

Visit the mod’s page on CurseForge and check the “Game Version” filter or the description. Mods must be made for your exact Hytale version. Using mods from different versions can cause crashes or unexpected behavior.

Next Steps

• Client Installation — Singleplayer mod guide
• Server Administration — Full server documentation
• Tips & Tricks — Performance optimization