IK_Retargeter crash bug still on UE 5.0.3?

RLK_III · June 14, 2023, 5:54am

I have been trying to get my Mixamo animations to successfully work with an imported MetaHuman character. I have built the rigs, ensured the poses are correct and have tested the animations in the retargeter (see video). However, as soon as I attempt to export those retargeted animations over, UE crashes. I have tried deleting and rebuilding the Retargeter from scratch, have completely deleted and re-imported new animations from Mixamo to see if it was the individual animations that were the cause or not (it wasn’t).

I had heard from a few sources that this issue had been resolved. Apparently not?

Anyone able to help me get around the issue or am I stuck until UE patches a fix?

Cheers

Assertion failed: OutPose.IsNormalized() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Animation\AnimSequence.cpp] [Line: 1467]

0x00007ffd0fa15349 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fa85b29 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fa85181 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffcff162396 UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffd0f989518 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0f9b8c9f UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fe2233b UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fe37c39 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fe36d35 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fe20156 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0fe3da31 UnrealEditor-Engine.dll!UnknownFunction []
0x00007ffd0d9c083a UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0e69854e UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0e6628a4 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0e38e203 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0d9a90ae UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0d9de730 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0d8f9529 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0ddcd5a4 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ffd0e75aac6 UnrealEditor-UnrealEd.dll!UnknownFunction []
0x00007ff70c7882f6 UnrealEditor.exe!UnknownFunction []
0x00007ff70c7a0d9c UnrealEditor.exe!UnknownFunction []
0x00007ff70c7a0e8a UnrealEditor.exe!UnknownFunction []
0x00007ff70c7a3c4d UnrealEditor.exe!UnknownFunction []
0x00007ff70c7b5564 UnrealEditor.exe!UnknownFunction []
0x00007ff70c7b8736 UnrealEditor.exe!UnknownFunction []
0x00007ffd8dd326ad KERNEL32.DLL!UnknownFunction []
0x00007ffd8fd4a9f8 ntdll.dll!UnknownFunction []

RLK_III · June 14, 2023, 10:32am

I figured it out!

When you import your MetaHuman in to Unreal Engine, do NOT create a new IK rig for it. Instead, COPY the existing rig found in your MetaHumans folder (MetaHuman>Common>Common), rename it, and use that one to make any edits in the retargeting.

From what I understand, you will need to ensure you are using the same naming convention for bones from Mixamo as with your MetaHuman (which is a much more detailed rigging), so when you open your copy of your MetaHuman IK rig it should look like this:

(IK Rigging brought over from MetaHuman automatically)

The reason you’ll need to copy this rig is you will have to make some significant edits

(Edited IK rig for MetaHuman)

If you do this step correctly, your animations from Mixamo should retarget perfectly!