Hello!
I’m getting this crash from time-to-time in a packaged build. I’ve copied the stack trace below. Has anyone else seen this one before?
[2026.03.16-07.03.31:099][730]LogThreadingWindows: Error: Runnable thread Background Worker #2 crashed.
[2026.03.16-07.03.31:099][730]LogWindows: Error: === Critical error: ===
[2026.03.16-07.03.31:099][730]LogWindows: Error:
[2026.03.16-07.03.31:099][730]LogWindows: Error: Fatal error!
[2026.03.16-07.03.31:099][730]LogWindows: Error:
[2026.03.16-07.03.31:099][730]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION 0x000002983e829280
[2026.03.16-07.03.31:099][730]LogWindows: Error:
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x000002983e829280 UnknownFunction
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de40ba5 BossExchange.exe!FSceneRenderer::GetCachedPreshadow()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de313f0 BossExchange.exe!FSceneRenderer::CreatePerObjectProjectedShadow()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de517f8 BossExchange.exe!FSceneRenderer::SetupInteractionShadows()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de2d844 BossExchange.exe!FSceneRenderer::CreateDynamicShadows()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de34533 BossExchange.exe!FGatherShadowPrimitivesPrepareTask::DoTask()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64de38e86 BossExchange.exe!TGraphTask::ExecuteTask()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff649684683 BossExchange.exe!UE::Tasks::Private::FTaskBase::TryExecuteTask()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff6496546ef BossExchange.exe!LowLevelTasks::TTaskDelegate<LowLevelTasks::FTask * __ptr64 __cdecl(bool),48>::TTaskDelegateImpl<LowLevelTasks::FTask::Init<UE::Tasks::Private::FTaskBase::Init’::2’::<lambda_1> >'::13’::<lambda_1>,0>::CallAndMove()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64966287e BossExchange.exe!LowLevelTasks::FTask::ExecuteTask()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64966262a BossExchange.exe!LowLevelTasks::FScheduler::ExecuteTask()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff649688171 BossExchange.exe!LowLevelTasks::FScheduler::WorkerLoop()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64964c0ea BossExchange.exe!operator<<()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff64985a233 BossExchange.exe!FThreadImpl::Run()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff649cb8ae8 BossExchange.exe!FRunnableThreadWin::Run()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff649cb177f BossExchange.exe!FRunnableThreadWin::GuardedRun()
[2026.03.16-07.03.31:099][730]LogWindows: Error: [Callstack] 0x00007ff90054e8d7 KERNEL32.DLL!UnknownFunction
[2026.03.16-07.03.31:099][730]LogWindows: Error:
[2026.03.16-07.03.31:099][730]LogWindows: Error: Crash in runnable thread Background Worker #2
[2026.03.16-07.03.31:149][730]LogExit: Executing StaticShutdownAfterError
[2026.03.16-07.03.31:150][730]LogWindows: FPlatformMisc::RequestExit(1, FRunnableThreadWin::GuardedRun.ExceptionHandler)
[2026.03.16-07.03.31:150][730]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, FRunnableThreadWin::GuardedRun.ExceptionHandler)
[2026.03.16-07.03.31:150][730]LogCore: Engine exit requested (reason: Win RequestExit)