LogRHI: Error: Breadcrumbs 'RenderingThread' problem when loading stuff

Chevidal45
Fri, 12 Dec 2025 13:38:34 +0000
Programming & Scripting

Hello everyone, I’m here to tell you about a crash that has been happening to me for the last 9 days. Make yourselves comfortable for my diary with my crash.

First of all, I’ll share the crash with you:

[2025.12.12-09.59.16:594][725]LogRHI: Error: Breadcrumbs ‘RenderingThread’

Nanite::BasePass

NaniteBasePass

BasePass

Scene

RenderGraphExecute - /ViewFamilies

SceneRender - ViewFamilies

Frame 15724

[2025.12.12-09.59.16:594][725]LogWindows: Could not start crash report client using ../../../Engine/Binaries/Win64/CrashReportClient-Win64-Debug.exe

[2025.12.12-09.59.16:594][725]LogMemory: Platform Memory Stats for Windows

[2025.12.12-09.59.16:594][725]LogMemory: Process Physical Memory: 4439.71 MB used, 5601.38 MB peak

[2025.12.12-09.59.16:594][725]LogMemory: Process Virtual Memory: 12105.31 MB used, 14281.36 MB peak

[2025.12.12-09.59.16:594][725]LogMemory: Physical Memory: 45158.96 MB used, 150565.36 MB free, 195724.31 MB total

[2025.12.12-09.59.16:594][725]LogMemory: Virtual Memory: 54496.07 MB used, 153516.25 MB free, 208012.31 MB total

[2025.12.12-09.59.16:594][725]Message dialog closed, result: Ok, title: The UE-LyraStarterGame Game has crashed and will close, text: Fatal error!

[2025.12.12-09.59.16:594][725]LogWindows: Error: === Critical error: ===

[2025.12.12-09.59.16:594][725]LogWindows: Error:

[2025.12.12-09.59.16:594][725]LogWindows: Error: Fatal error!

[2025.12.12-09.59.16:594][725]LogWindows: Error:

[2025.12.12-09.59.16:594][725]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffffffffffff

[2025.12.12-09.59.16:594][725]LogWindows: Error:

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff789dec975 LyraGame.exe!BindUniformBuffer() [D:\UnrealEngine\Engine\Source\Runtime\D3D12RHI\Private\D3D12Commands.cpp:125]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff789e188a4 LyraGame.exe!SetShaderParametersOnContext() [D:\UnrealEngine\Engine\Source\Runtime\D3D12RHI\Private\D3D12Commands.cpp:1319]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff789e0d017 LyraGame.exe!FD3D12CommandContext::RHISetShaderParameters() [D:\UnrealEngine\Engine\Source\Runtime\D3D12RHI\Private\D3D12Commands.cpp:1366]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a1109be LyraGame.exe!FRHICommandSetShaderParameters::Execute() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Public\RHICommandListCommandExecutes.inl:124]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff7888910d1 LyraGame.exe!FRHICommand<FRHICommandSetShaderParameters,FRHICommandSetShaderParametersString1788>::ExecuteAndDestruct() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Public\RHICommandList.h:1621]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a112d11 LyraGame.exe!FRHICommandListBase::Execute() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:524]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a14032e LyraGame.exe!FRHICommandListExecutor::FTranslateState::Translate() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:1081]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a0fc096 LyraGame.exe!`FRHICommandListExecutor::FSubmitState::Dispatch’::`10’::<lambda_1>::operator()() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:1029]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a1146d1 LyraGame.exe!FRHICommandListExecutor::FTaskPipe::Execute() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:725]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78588f686 LyraGame.exe!TGraphTask<TFunctionGraphTaskImpl<void __cdecl(enum ENamedThreads::Type,TRefCountPtr const &),0> >::ExecuteTask() [D:\UnrealEngine\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:707]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78526ff33 LyraGame.exe!UE::Tasks::Private::FTaskBase::TryExecuteTask() [D:\UnrealEngine\Engine\Source\Runtime\Core\Public\Tasks\TaskPrivate.h:528]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff785263059 LyraGame.exe!FNamedTaskThread::ProcessTasksNamedThread() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:779]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff7852635ae LyraGame.exe!FNamedTaskThread::ProcessTasksUntilQuit() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:668]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff785272447 LyraGame.exe!FTaskGraphCompatibilityImplementation::WaitOnNamedThreadForTasks() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:1511]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff785272bd3 LyraGame.exe!FTaskGraphCompatibilityImplementation::WaitUntilTasksComplete() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:1478]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff7859143dd LyraGame.exe!FTaskGraphInterface::WaitUntilTaskCompletes() [D:\UnrealEngine\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:428]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a13d8d5 LyraGame.exe!FRHICommandListExecutor::Submit() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:1493]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a125aba LyraGame.exe!FRHICommandListImmediate::ImmediateFlush() [D:\UnrealEngine\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:1573]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a25793b LyraGame.exe!FRDGBuilder::Execute() [D:\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderGraphBuilder.cpp:2114]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff789819fcb LyraGame.exe!`FSceneRenderProcessor::Execute’::`30’::<lambda_4>::operator()() [D:\UnrealEngine\Engine\Source\Runtime\Renderer\Private\SceneRenderBuilder.cpp:939]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a29d6f1 LyraGame.exe!`FRenderThreadCommandPipe::EnqueueAndLaunch’::`5’::<lambda_1>::operator()() [D:\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:1547]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a2bbd57 LyraGame.exe!TGraphTask<TFunctionGraphTaskImpl<void __cdecl(void),1> >::ExecuteTask() [D:\UnrealEngine\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:707]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78526ff33 LyraGame.exe!UE::Tasks::Private::FTaskBase::TryExecuteTask() [D:\UnrealEngine\Engine\Source\Runtime\Core\Public\Tasks\TaskPrivate.h:528]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff785263059 LyraGame.exe!FNamedTaskThread::ProcessTasksNamedThread() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:779]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff7852635ae LyraGame.exe!FNamedTaskThread::ProcessTasksUntilQuit() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:668]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a2dbddc LyraGame.exe!RenderingThreadMain() [D:\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:319]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78a2dc6f9 LyraGame.exe!FRenderingThread::Run() [D:\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:451]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff78589b218 LyraGame.exe!FRunnableThreadWin::Run() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:159]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ff785893f0f LyraGame.exe!FRunnableThreadWin::GuardedRun() [D:\UnrealEngine\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:79]

[2025.12.12-09.59.16:594][725]LogWindows: Error: [Callstack] 0x00007ffb3822e8d7 KERNEL32.DLL!UnknownFunction

[2025.12.12-09.59.16:594][725]LogWindows: Error:

I recently changed my Unreal project from 5.4 to 5.6. I have a map that works with world partition, has nanite enabled, and so on. I recently realised that when I modified a part of the world, I think some shaders had to be recompiled, and since then all subsequent builds have failed. Even after removing the commit that ‘broke that build’. I guess that since the pso has been reset, it now fails. It’s a bit random because this crash occurs when loading certain meshes from the world or parts of the landscape. The truth is that the logs don’t give much information about it. Some logs that I’ve seen that have piqued my curiosity are these:

[2025.12.12-08.50.47:663][549]LogMaterial: Error: Loading a material resource None with an invalid ShaderMap!

We have already tried several things:

We have tried using Directx11

We have tried disabling the RHI Thread completely

We have recompiled all the shaders in the project in case any shader was failing.

We have cleared the project cache and rebuilt it

7 posts - 2 participants