MetaHuman Assembly Causes System Instability and Corrupted MetaHuman Assets
Support Escalation Report
System Specifications
Laptop Model
- ASUS ROG Strix G18 (2024)
- Model: G814JIR
CPU
- Intel Core i9-14900HX
GPU
- NVIDIA GeForce RTX 4070 Laptop GPU
RAM
- 32 GB DDR5
Storage
- NVMe SSD
Operating System
- Windows 11
BIOS
- Version 322 (Latest available from ASUS)
GPU Mode
- Tested in both:
- Ultimate
- Standard
Unreal Engine
Version:
Unreal Engine 5.8 Release
MetaHuman Plugin:
Latest version bundled with UE 5.8.
Issue Summary
I am unable to use MetaHuman normally.
The issue occurs only when using the Full Rig workflow or MetaHuman Assembly.
Joint Rig works correctly.
Full Rig and Assemble consistently fail.
In several attempts the entire Windows system becomes unstable, forcing a reboot, while in other attempts Unreal crashes.
Eventually the MetaHuman asset becomes corrupted and cannot even be opened anymore.
Expected Behaviour
MetaHuman should:
- Open normally.
- Complete Full Rig successfully.
- Complete Assembly successfully.
- Produce a usable MetaHuman Blueprint.
Actual Behaviour
Joint Rig
Works normally.
- Fast.
- Stable.
- No crash.
Full Rig
Sometimes:
- freezes
- crashes Unreal
- or causes system instability.
Assembly
Most of the time:
- starts correctly
- imports DNA
- begins building the skeletal mesh
then
the process fails.
After several attempts:
the MetaHuman asset becomes corrupted.
Current Crash
Opening the MetaHuman now immediately crashes Unreal with:
Assertion failed: false
MeshAttributeArray.h
NumElements mismatch in FAttributesSetBase::Insert
TextureCoordinate
Callstack includes
UnrealEditor_InterchangeDNA
UnrealEditor_InterchangeImport
UnrealEditor_MetaHumanCharacterEditor
which indicates the crash happens while importing or rebuilding MetaHuman DNA.
Previous Crash History
Earlier crashes included:
BugCheck 0x1E
KMODE_EXCEPTION_NOT_HANDLED
BugCheck 0x50
PAGE_FAULT_IN_NONPAGED_AREA
BugCheck 0x3B
SYSTEM_SERVICE_EXCEPTION
BugCheck 0x7F
UNEXPECTED_KERNEL_MODE_TRAP
Multiple Minidumps were collected and analyzed using WinDbg.
No single third-party driver was consistently identified.
No recurring NVIDIA driver fault (nvlddmkm.sys) was found.
Unreal Log Analysis
The log shows:
MetaHuman loads correctly.
Plugins load correctly.
No Fatal Error occurs.
The process reaches:
Interchange start importing source (.mhdna)
then
Building Skeletal Mesh FaceMesh_3...
Immediately afterwards the application/system fails.
There is no Unreal Fatal Error before the interruption.
This suggests the failure occurs during MetaHuman mesh assembly.
What Has Already Been Tested
Windows reinstall
Yes
Latest BIOS
Installed
Version 322
Latest NVIDIA driver
Installed
Page File
Originally Windows reported:
Not enough memory available.
After increasing the page file to
Initial
32768 MB
Maximum
65536 MB
the memory error completely disappeared.
However,
MetaHuman Assembly still fails.
DirectX 11
Tested
Issue persists.
DirectX 12
Tested
Issue persists.
GPU Mode
Ultimate
Tested
Standard
Tested
No change.
Fresh Unreal Project
Issue reproduced.
Project Verification
The exact same project and MetaHuman successfully assemble on another PC.
Only my machine experiences the issue.
Important Observation
The exact same MetaHuman project works correctly on another computer.
Therefore:
The MetaHuman assets themselves are not corrupted initially.
The project is valid.
The issue appears specific to this machine/environment.
Repro Steps
- Create a MetaHuman.
- Save.
- Select Full Rig.
- Start Assemble.
- Import begins normally.
- DNA imports correctly.
- Skeletal mesh build begins.
- Failure occurs during mesh assembly.
- Eventually the MetaHuman becomes corrupted and can no longer be opened.
Files Available
Attached:
- Unreal Logs
- WinDbg analysis
- Multiple Minidumps
- Crash reports
- Crash callstacks
Request
Could this issue please be escalated to the MetaHuman / InterchangeDNA engineering team?
Based on the collected evidence, the failure appears to occur during the MetaHuman DNA → Skeletal Mesh assembly pipeline rather than being caused by insufficient hardware resources.
The same project assembles successfully on another computer, while this machine consistently fails despite:
- Latest BIOS
- Latest GPU drivers
- Fresh Windows installation
- Latest Unreal Engine
- Increased page file
- Multiple troubleshooting attempts
Any guidance, debug build, or internal diagnostic tools that could identify the failing stage in the MetaHuman assembly pipeline would be greatly appreciated.