Unreal crashes when reading .vrma animation

[Puru-Nekor]

Describe the bug I tried to import vrma animations, I selected my skeleton mesh that I imported with VRM4U, then eventually it crashed and give me an error or either entered with no animation at all. To prevent issues that may cause by me exporting the vrma from blender's vrm plugin, I used https://vroid.com/en/news/6HozzBIV0KkcKf9dc1fZGW official vrma to test and have pretty much same results.

Screenshots, log

here's the error log: LoginId:* I will take this off * EpicAccountId:* I will take this off too *

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

UnrealEditor_VRM4ULoader UnrealEditor_VRM4ULoader UnrealEditor_VRM4ULoader UnrealEditor_VRM4UImporter UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_AssetTools UnrealEditor_AssetTools UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_Engine UnrealEditor_Engine UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor UnrealEditor UnrealEditor UnrealEditor UnrealEditor UnrealEditor kernel32 ntdll

UnrealEngine Version: UE5.4.4

Additional context temp_Test_1.zip this is the vma from blender's addon VRMA_MotionPack.zip this is the official ones, they all crash

[Puru-Nekor]

update:.bvh have the complete same issue

[ruyo]

Hi. It will be fixed in the next release. However, if the bone names are different, importing with the Skeleton specification will fail. If it fails, please use Retarget. Thanks.