Hi everyone,
I’m running into a consistent crash in Unreal Engine 5.7 and I’m having trouble figuring out the exact cause. I’m hoping someone who has dealt with this before can point me in the right direction.
This is the crash message:
Assertion failed: Scene->RayTracingScene.GetCachedInstanceGeometry(RayTracingInstanceIndexMain) == CachedRayTracingGeometry->GetRHI()
File: PrimitiveSceneInfo.cpp
Line: 395
And before the crash, the log repeatedly shows:
LogRenderer: Using fallback RTPSO
LogPSOHitching: Encountered X PSO creation hitches...
One thing that might be related:
I have foliage meshes (plants) painted with the Foliage tool. These meshes use Nanite, and the material has World Position Offset for wind animation.
My log also shows this warning:
Nanite instanced static mesh using World Position Offset not supported in ray tracing yet
I’m not sure if this warning is directly responsible for the crash, or if it’s just unrelated noise.
I have invisible walls too that might be crashing, but i’m not sure..
Any guidance would be greatly appreciated. I can share full logs, crash context files, and the project setup if needed.
Thanks in advance!