hi
Please try and use the UEFN Feature Project
After using this for over an hour UEFN 35.20 did not crash
Followed the documentation in
Transfer Character Animations in Unreal Editor for Fortnite | Unreal Editor for Fortnite Documentation | Epic Developer Community
IK Rig in Unreal Engine | Unreal Engine 5.6 Documentation | Epic Developer Community
Warning quote
This process creates new animation assets for your target character from the source. You cannot assign animations that are on your source character to your target character without following this process.
As you go through this tutorial, you will practice the retargeting workflows with a Fortnite character using the FN_Mannequin asset inside the Animation Starter template in Unreal Editor for Fortnite (UEFN).
Open UEFN and create a new project, ensuring that you select the Animation Starter template from the Feature Examplessection.
Tried many examples in
Also tried
Skeleton Editor in Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community
and this works fine
My PC does have a 32GB page file manually added, which mentioned in past post
How to add a 32gb pagefile
my virtual memory usage is 21.7 GB of 38GB just idle using the UEFN Example jumps to 34GB when opening the IK editor and adding a virtual bone
Update
With the release of 5.6.0 at the State of Unreal on 3rd June please visit the new Methuman features at
MetaHuman leaves Early Access with a feature-packed new release - MetaHuman
The further update to UE5.6 is relevant to UEFN IK Retargeted, which uses a different version of MetaHuman. Therefore, UE4/5 Standard Engine Metahuman engine projects will crash.
They will pass UEFN Validity Checking but WILL crash UEFN as different data is being sent into IK Editor unchecked