UE5 crashing when more groom is loaded using path tracing

Development Cinematics & Media
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1

I have encountered the following crash error with any version of UE5 including 5.3, it is when using binding skeletal mesh and using path tracing after loading more groom. I don’t know how to fix it, I hope the official can solve this problem soon. groom works better with path tracing in UE, lumen can’t achieve the desired result.

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Assertion failed: WeightCount == InteroplationWeightCount [File:D:\build++UE5\Sync\Engine\Plugins\Runtime\HairStrands\Source\HairStrandsCore\Private\GroomResources.cpp] [Line: 1466]

UnrealEditor_HairStrandsCore
UnrealEditor_HairStrandsCore
UnrealEditor_HairStrandsCore
UnrealEditor_HairStrandsCore
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

1 Like
2

Hi did you manage to solve this? Getting the same error even with Lumen.

3

Not yet solved, lumen doesn’t have this problem for now, but lumen doesn’t work too well for grooming