0.10.0 UE5 - Windows 11 - EXCEPTION_ACCESS_VIOLATION writing address 0x000000002000000c on startup

[BlackcloakX]

Setup

• CARLA version: 0.10.0
• Platform: Windows 11 25H2
• Python version: 3.8.10 (although one entry in the log says 3.11, which was the case the first time)
• GPU: RX 9070
• GPU Drivers: 25.11.1

I compiled it from source using the CarlaSetup.bat. (I tried it first more manually, but after some time trying to get it to work, I deleted everything and just used the .bat, that includes getting rid of other Python versions and for good measure deinstalling Visual Studio so the .bat can install it)

When I write cmake --build Build --target launch the compiling works, but when the editor is almost finished loading I get an access violation. (see first log)
(When I try UnrealEditor.exe -noraytracing, I don't get that violation, but the Editor crashes in the main menu because of FallbackMaterialProxy) (second log)

I'd really like to work on my PC with the RX 9070, because on another Mini-PC with just a 6600M it works, but because of the VRAM the Editor runs too sluggishly

CarlaUnreal.log

Unreal.log

[BlackcloakX]

Setting r.Lumen.HardwareRayTracing to False in the DefaultEngine.ini actually makes it work, but that's more of a workaround, not a solution.

[Blyron]

If that's making it work it may says your GPU is not good enough. Maybe you need more VRAM

[BlackcloakX]

Considering that the RX 9070 has 16 GB VRAM I doubt that. (Especially because leaving the option enabled with a 6600M doesn't cause a problem and that card is way weaker and has only 8 GB)

[Blyron]

I suggest to update Drivers according to what epic says, if it doesnt help it must be a problem with Unreal RT Linux and your gpu