# \[Free & Open Source\] UE to Rigify — Blender 5 Compatibility Repair

**URL:** <https://blenderartists.org/t/free-open-source-ue-to-rigify-blender-5-compatibility-repair/1655689>\
**Category:** Released Add-ons and Extensions\
**Tags:** free\
**Created:** [October 22, 2026, 7:52am UTC](https://blenderartists.org/t/free-open-source-ue-to-rigify-blender-5-compatibility-repair/1655689 "2026-10-22T07:52:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![111353](https://blenderartists.org/user_avatar/blenderartists.org/111353/32/776444_2.png) [@111353](https://blenderartists.org/u/111353)\
**Post date:** [October 22, 2026, 7:52am UTC](https://blenderartists.org/t/free-open-source-ue-to-rigify-blender-5-compatibility-repair/1655689/1 "2026-10-22T07:52:20Z")

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Hi everyone!

While using UE to Rigify to transfer Unreal Engine character animations to Rigify, I ran into errors caused by Blender 5’s animation API changes. I’ve repaired and updated the add-on and published it as a standalone open-source repository.

**GitHub:**

> **[GitHub - ozoshanniao/UE2Rigify-Blender5-Repair: Unofficial Blender 5 compatibility repair of UE to...](https://github.com/ozoshanniao/UE2Rigify-Blender5-Repair)**
>
> Unofficial Blender 5 compatibility repair of UE to Rigify 1.7.6, based on poly-hammer/BlenderTools. Original Epic Games code and MIT license retained.

The main fixes include:

- Compatibility with the removal of `Action.fcurves` in Blender 5.
- Proper Action slot and NLA slot assignment and curve access.
- Updated pose-bone selection for Blender 5.
- A fix for duplicated root motion caused by baking Rigify’s internal mechanism and deform bones alongside its controls.

The workflow has been tested in **Blender 5.2.2 LTS** , using a **90-bone UEFN mannequin with a 77-frame animation** , including conversion to Rigify and baking back to the source skeleton. Other character templates and older Blender versions have not yet been tested.

The repository includes the complete source code, an installable ZIP in the `dist` folder, English/Chinese documentation, and test results. The add-on appears as **UE to Rigify (Blender 5 Repair)** after installation. Please back up your project and install it as a replacement for the original add-on.

This is an **unofficial repair based on UE to Rigify 1.7.6 from [poly-hammer/BlenderTools](https://github.com/poly-hammer/BlenderTools)**. The original tool was developed by Epic Games. Original author credits, templates, and the MIT license are retained. This repair build is identified as **version 1.7.7**.

Hopefully this helps anyone who wants to bring UE animations into Rigify for further editing. Feedback, bug reports, and contributions are welcome!