DE Model Fixer (serialisation error FIX)

⭐ — (20 endorsements) 📥 695 downloads 📌 v1.3 📅 9/22/2025
🟡 Updated this year

By ITSM0VER · Tools

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 6/18/2026 📅 Created: 9/22/2025

🔍 Analysis

  • 👍 2.9% endorsement rate — high engagement, a strong quality signal
  • 🏆 #6 of 16 Tools mods in this game by downloads

📋 About This Mod

This tool fixes the infamous SERIALISATION ERROR when cooking custom meshes for the Trilogy DE games

Model Fixer is a lightweight utility designed to repair models cooked in Unreal Engine (.uasset/.uexp) that encounter serialization errors in GTA Trilogy DE, making them usable again in the latest update!

It simplifies the process of fixing broken model files, packaging folders into uncompressed . PAK files, and unpacking . PAK archives with drag-and-drop ease.

--TOOL CREATED BY ITSM0VER--

Update v1. 3. 1 Highlights:

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  • - Allows users to change UnrealPak version! (Fixes errors with newer pak files)
  • - Allows users to pak or unpak multiple files/folders at once!
  • - Allows user to choose with/without compression when paking folders!
  • - Changed unpack location to go to where the user drags from (not to the desktop)
  • - The app remembers your choices for Unreal Pak version & Compression setting!
  • - updated tutorial links
  • - updated app info
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TOOL USAGE TUTORIAL HERE

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FOLDER NAMES WITH BRACKETS () & SPACES WON'T PAK PROPERLY. MAKE SURE TO NOT INCLUDE THEM WHEN NAMING FOLDERS! {I will fix this in a future update!}

The logic for fixing the models by removing any AdjacencyIndexBuffers in the mesh's LODs, and then updating the export sizes/offsets accordingly in the .uasset file. Made by Hypermodule This would NOT be possible without them and we are so grateful!

THIS WILL MAKE YOUR MODEL NOT COMPATIBLE WITH PREVIOUS VERSIONS OF THE GAMES! (v1. 04. 5 & BELOW)

Make sure the uasset and uexp file are in the same folder, click "Fix Model" and choose the uasset file to fix! Re-pack the files and it's fixed!

I also included a drag n drop feature for creating/extracting paks/folders to make the process as simple as possible!

Github for MeshAibRemover - HERE

Github for this tool - HERE

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NET 8. 0 Required, download it HERE

PLEASE ENDORSE/LIKE THE MOD IF YOU ENJOY IT :D

📊 Mod Details

Game
Grandtheftautothetrilogy Mods
Author
ITSM0VER
Version
1.3
Downloads
695
Endorsements
20
Category
Tools
Created
9/22/2025
Updated
6/18/2026

🔧 How to Install Grand Theft Auto: The Tri Mods

Download from Nexus Mods.

📖 Full step-by-step install guide for Grand Theft Auto: The Tri →

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

🎮 Need cheat codes or console commands? Check ur gaming wiki for Grand Theft Auto: The Tri commands, item IDs, and more.

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