Metahuman Common Files are modified on character assembly

Development Asset Creation
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1

Hi,

We are currently on 5.7 Preview 1 and using Metahuman Creator Plugin. We noticed that compared to 5.6, every time we assemble a character, all the common files get modified or overwritten.

Since we use a modified metahuman skeleton (simply added more bones for accessories) and custom anim blueprints, we enabled the “Experimental Workflow” in the Pipeline settings of the Metahuman Creator pipeline and this seems to be working as intended for our specified skeleton and anim blueprints, but all other common files still get modified.

We are wondering if this is a known issue, if there is any workaround or if we missed something since the 5.7 update.

Repro Steps:

  1. Create a Metahuman Character using UE 5.7 Preview 1
  2. Asemble the character
  3. Create another Metahuman Character and assemble it
  4. Notice all common files gets modified again when the second character assembly is done

Thank you for looking into this!

Have a great day,

Christophe

2

Hi Christophe,

I have been able to reproduce the change in behaviour between Unreal Engine 5.6 and 5.7 Preview.

However, I am not able to reproduce it with a newer build of Unreal Engine 5.7, suggesting the problem has been fixed for the full release.

Are you using precompiled binaries through the Epic Games Launcher, or do you build Unreal Engine from source?

Thanks,

Mark.

3

Hi!

Thanks for looking into it. We are currently using precompiled binaries from the Epic Games Launcher, but we plan on switching to a an engine build from source as soon as the official release is up for 5.7. Good to know it already seems to be fixed on the latest source build.

Thanks,

Christophe

4

Hey!

I had another question regarding a conform issue we noticed between 5.6 and 5.7 Preview from the Launcher. We are using the MetaHuman Conform Topology assets from fab to conform our metahuman characters. In 5.7, if the template mesh has been scaled, the head and body do not align when conforming. It used to work properly in 5.6. I attached a screenshot showing the issue and the scaled up fbx from the conform topology pack used to reproduce.

  1. Create a metahuman character in 5.6 and conform the body and the head using the scale dup FBX
  2. Do the same in 5.7
  3. Notice the head not aligning properly

I was wondering if you would have any info if this would also be fixed in the latest source build since we do not currently have access to one. I can open another post if required.

Thanks again, Christophe

5

Yes, this should be resolved in the final build of Unreal Engine 5.7 - the neck seam looked as expected in my test. Since the Preview release numerous bug fixes have been made to the conform workflow so it should be more robust.

Mark.

6

Hey Mark,

Thanks for all the informations provided,

We will be testing the latest release as soon as we can!

Have a great day,

Christophe