Nemesis - Fix for Non-US Locale Users (ERROR 5001)
⚪ Last updated 2023⚠️ Install Order · 5 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 3.7% endorsement rate — high engagement, a strong quality signal
- 🏆 #3 of 65 Animation mods in this game by downloads
📋 About This Mod
IMPORTANT NOTE
I highly recommend trying out Pandora Behaviour Engine (https://github.com/Monitor144hz/Pandora-Behaviour-Engine-Plus). It is being updated regularly and could work better than Nemesis for some load orders. I will keep this mod up for the rest, but I won't use it anymore.
Pandora is unfinished, but for my recent load order, it works. If you struggle to make it work, just ignore it for the time being and keep using Nemesis.
What does this mod do?
If you run Nemesis Unlimited Behavior Engine and your system locale is not set to English (US), chances are, you get the following error:
ERROR(5001): Invalid format has been detected in "animationsetdatasinglefile.txt". Please contact the template creator or mod author
Project: DefaultFemaleData\DefaultFemale.txt
Header: DragonMountedMRhSolo_ShieldOrTorch.txt
Failed to generate behavior
This error occurs because the file is created in the wrong way (that depends on the system locale).
The only way to fix this error is to get a valid copy of the animationsetdatasinglefile.txt file and replace the wrongly generated one every time you click Update Engine. That means every time you add/remove/edit a behavior mod. This is cumbersome and tedious, so I created a single batch file to do this with a single click and decided to share it.
How to use it?
-
[]Install using MO2
[
]Add FixNemesis.bat as an executable:In Mod Organizer 2, switch the tab on the right panel to Data and locate the file in the Data directory, as shown in the picture
- Whenever you use Nemesis, after clicking the Update Engine button, close Nemesis and run FixNemesis. Then open Nemesis again and continue by clicking Launch Nemesis Behavior Engine
Credits
ShikyoKira for Nemesis and for providing the correct txt file (https://github.com/ShikyoKira/Project-New-Reign---Nemesis-Main/issues/155)
This mod fixes ERROR(5001) in Nemesis Unlimited Behavior Engine, which occurs on most non-US locales. It has 235 endorsements and 6,394 downloads, last updated December 2023. For users experiencing this specific error, it's a straightforward solution.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Directly solves a common pain point for non-US users (235 endorsements).
- Lightweight fix with no extra bloat.
- Active enough to have 6,394 downloads, so it's been tested by many.
⚠️ Cons
- Only addresses ERROR(5001) – if you have other Nemesis issues, this won't help.
- Last updated in December 2023, so it may not be compatible with newer Nemesis versions.
- Potential compatibility risk with other mods that modify Nemesis files.
For Skyrim modders who get ERROR(5001) when running Nemesis due to non-US locale settings. If you're on a US locale or don't use Nemesis, skip this – it's a targeted fix, not a general utility.
💡 Beginner Tips
- Make sure you're running Nemesis as administrator before applying the fix.
- If you're using a mod manager, install this after Nemesis to avoid overwriting.
- Test Nemesis after installing to confirm the error is gone.
📊 Mod Details
- Game
- Skyrim Mods
- Author
- NimRo97
- Version
- 1.0.4
- Downloads
- 6,394
- Endorsements
- 235
- Category
- Animation
- Created
- 9/29/2022
- Updated
- 12/8/2023
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