Problem when running the project

Hello, everyone. Could someone help me with this packaging issue? When I try to run the executable, I encounter this problem. Does anyone know what might be causing it?

Hey there @APXORG! Welcome to the community! It looks like there’s an issue with raytracing. Are you using hardware or software raytracing?

Here’s my setup.

Based on my observations, the issue occurs when enabling hardware ray tracing. I tested it, and Megalights functions perfectly; however, the problem lies in hardware rendering not working. Only software rendering is functional, which prevents me from using Megalights. This is happening with Unreal Engine 5.5 on Windows. Is there any solution to this?

Interesting! May I know your GPU itself? Does hardware raytracing work appropriately in a build of (for example) one of the sample projects without megalights?

I have an NVIDIA RTX 4060. Before the update, everything was perfect, but now, even after disabling Megalights, the executable won’t run. It only works when packaging using software ray tracing.

Looks like hardware raytracing itself might be bugged this patch. Does this issue apply to other fresh sample projects as well? I’m seeing incompatibilities with the water plugin + megalights even if disabled. If it does apply to everything, I’d first try verifying the engine just as a precaution, updating GPU drivers, and testing on other projects as well just to verify it’s global. If it is and can be reproduced, I would submit a bug here:

https://www.unrealengine.com/en-US/support/report-a-bug