UE5.5 crashes with import of CC4 character (works in UE 5.4)

Pipeline Unreal Engine
1

Dear Reallusion Team,
sadly as it is, in our case our CC4 export (Unreal), UE5.5 crashes all the time with a texture problem, when we import it with your auto plugin.

[2025.02.28-18.35.21:877][497]LogTexture: Display: Building textures: /Game/CC_Imports/15_Stocker_V5/textures/Stocker_V5/Std_Skin_Head_Wrinkle_Diffuse3.Std_Skin_Head_Wrinkle_Diffuse3 (TFO_AutoDXT, 2048x2048 x1x1x1) (Required Memory Estimate: 388.083323 MB), EncodeSpeed: Fast
[2025.02.28-18.35.21:978][497]LogEditorFactories: Display: Image imported as : TSF BGRA8
[2025.02.28-18.35.22:057][497]LogEditorFactories: Display: Auto-detected normal map
[2025.02.28-18.35.22:068][497]LogWindows: Error: appError called: Assertion failed: MipView.GammaSpace == LayerData.SourceGammaSpace [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\TextureDerivedDataTask.cpp] [Line: 410]

I just can not get it to work in UE5.5

if you need this character to try it out yourself, I can send the CC4 project to you via wetransfer

please fix it for future use.
Thanks,
Peter
PS: workarround → import to UE5.4 and than migrate to UE5.5 however, I don’t want to do this forever…

1 Like
2

Hello!

I’m having the same issue. I’ve tried changing the output texture format, sizes, etc. with no success.

I see the workaround for copying between versions of Unreal…are there any additional workarounds anyone has found to work?

Are there any updates to patch this?

Thanks!

3

Hi…

Are you following the updated Unreal 5.5 auto-setup tutorial HERE? This method should work fine.