# Packaging fails with substepping enabled **URL:** \ **Category:** Platform & Builds\ **Tags:** unreal-engine, question\ **Created:** [August 28, 2024, 8:10am UTC](https://forums.unrealengine.com/t/packaging-fails-with-substepping-enabled/1994988 "2024-08-28T08:10:42Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![nixonkuw](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@nixonkuw](https://forums.unrealengine.com/u/nixonkuw)\ **Post date:** [November 6, 2024, 2:09am UTC](https://forums.unrealengine.com/t/packaging-fails-with-substepping-enabled/1994988/3 "2024-11-06T02:09:41Z")
Wanted to bump this, seeing as well intermittently and frequently on 5.4.3. - A full workspace clean seems to get around this but this is unfeasible, and the issue reoccurs after some time. - Unsure of the initial cause since it didn’t seem to occur determinately. - Output shown below, seems to mention a successful cook and this occurs immediately after. ```auto LogInit: Display: Success - 0 error(s), 314 warning(s) LogInit: Display: Execution of commandlet took: 2m 11s (131.95 seconds) LogWindows: Error: begin: stack for UAT LogWindows: Error: === Critical error: === LogWindows: Error: LogWindows: Error: Fatal error! LogWindows: Error: LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x0000000b00000007 LogWindows: Error: LogWindows: Error: [Callstack] 0x00007ffcca7bfaad ntdll.dll!UnknownFunction [] LogWindows: Error: [Callstack] 0x00007ffc91516118 UnrealEditor-Engine.dll!FScopedSceneLock_Chaos::LockScene() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\PhysicsEngine\Experimental\ChaosScopedSceneLock.cpp:156] LogWindows: Error: [Callstack] 0x00007ffc914ac986 UnrealEditor-Engine.dll!FScopedSceneLock_Chaos::FScopedSceneLock_Chaos() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\PhysicsEngine\Experimental\ChaosScopedSceneLock.cpp:112] LogWindows: Error: [Callstack] 0x00007ffc915cb63c UnrealEditor-Engine.dll!FPhysicsObjectExternalInterface::LockWrite() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\PhysicsEngine\PhysicsObjectExternalInterface.cpp:29] LogWindows: Error: [Callstack] 0x00007ffc904f0774 UnrealEditor-Engine.dll!UPrimitiveComponent::OnDestroyPhysicsState() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Components\PrimitiveComponent.cpp:968] LogWindows: Error: [Callstack] 0x00007ffc9065115e UnrealEditor-Engine.dll!UStaticMeshComponent::OnDestroyPhysicsState() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Components\StaticMeshComponent.cpp:827] LogWindows: Error: [Callstack] 0x00007ffc9035fd08 UnrealEditor-Engine.dll!UActorComponent::DestroyPhysicsState() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Components\ActorComponent.cpp:1737] LogWindows: Error: [Callstack] 0x00007ffc9036e764 UnrealEditor-Engine.dll!UActorComponent::ExecuteUnregisterEvents() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Components\ActorComponent.cpp:1778] LogWindows: Error: [Callstack] 0x00007ffc903f3a40 UnrealEditor-Engine.dll!UActorComponent::UnregisterComponent() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Components\ActorComponent.cpp:1502] LogWindows: Error: [Callstack] 0x00007ffc8fbed552 UnrealEditor-Engine.dll!AActor::UnregisterAllComponents() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Actor.cpp:5338] LogWindows: Error: [Callstack] 0x00007ffc8fb68487 UnrealEditor-Engine.dll!AActor::BeginDestroy() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Engine\Private\Actor.cpp:745] LogWindows: Error: [Callstack] 0x00007ffc945aae16 UnrealEditor-CoreUObject.dll!UObject::ConditionalBeginDestroy() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp:1214] LogWindows: Error: [Callstack] 0x00007ffc944dcce0 UnrealEditor-CoreUObject.dll!UnhashUnreachableObjects() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\CoreUObject\Private\UObject\GarbageCollection.cpp:5949] LogWindows: Error: [Callstack] 0x00007ffc944663f7 UnrealEditor-CoreUObject.dll!IncrementalPurgeGarbage() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\CoreUObject\Private\UObject\GarbageCollection.cpp:4572] LogWindows: Error: [Callstack] 0x00007ffc945ecd82 UnrealEditor-CoreUObject.dll!StaticExit() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp:5439] LogWindows: Error: [Callstack] 0x00007ffc94436c37 UnrealEditor-CoreUObject.dll!TBaseStaticDelegateInstance::ExecuteIfSafe() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:777] LogWindows: Error: [Callstack] 0x00007ff733af20c1 UnrealEditor-Cmd.exe!TMulticastDelegate::Broadcast() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl:956] LogWindows: Error: [Callstack] 0x00007ff733af1792 UnrealEditor-Cmd.exe!FEngineLoop::AppPreExit() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:6893] LogWindows: Error: [Callstack] 0x00007ff733afccc1 UnrealEditor-Cmd.exe!FEngineLoop::Exit() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5159] LogWindows: Error: [Callstack] 0x00007ff733afee5b UnrealEditor-Cmd.exe!GuardedMain() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\Launch.cpp:194] LogWindows: Error: [Callstack] 0x00007ff733afeeba UnrealEditor-Cmd.exe!GuardedMainWrapper() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:118] LogWindows: Error: [Callstack] 0x00007ff733b02384 UnrealEditor-Cmd.exe!LaunchWindowsStartup() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:258] LogWindows: Error: [Callstack] 0x00007ff733b17e04 UnrealEditor-Cmd.exe!WinMain() [C:\Horde\ABC\Sync\Unreal\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:298] LogWindows: Error: [Callstack] 0x00007ff733b1a426 UnrealEditor-Cmd.exe!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] LogWindows: Error: [Callstack] 0x00007ffcc9eb7374 KERNEL32.DLL!UnknownFunction [] LogWindows: Error: LogWindows: Error: end: stack for UAT Took 146.27s to run UnrealEditor-Cmd.exe, ExitCode=3 Copying crash data to C:\Horde\ABC\Sync\Unreal\Engine\Programs\AutomationTool\Saved\Logs\BuildCookRun\Crashes\UECC-Windows-... Cook failed. (see C:\Horde\ABC\Sync\Unreal\Engine\Programs\AutomationTool\Saved\Logs\BuildCookRun\Log.txt for full exception trace) AutomationTool executed for 0h 2m 28s AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure) ``` CrashContext: ```auto 141 142 void FScopedSceneLock_Chaos::LockScene() 143 { 144 if (!Solver) 145 { 146 return; 147 } 148 149 switch (LockType) 150 { 151 case EPhysicsInterfaceScopedLockType::Read: 152 Solver->GetExternalDataLock_External().ReadLock(); 153 break; 154 case EPhysicsInterfaceScopedLockType::Write: 155 ***** Solver->GetExternalDataLock_External().WriteLock(); 156 break; 157 } 158 159 bHasLock = true; 160 } 161 162 void FScopedSceneLock_Chaos::UnlockScene() 163 { 164 if (!Solver) 165 { 166 return; 167 } 168 169 switch (LockType) 170 { ``` --- _[View the full topic](https://forums.unrealengine.com/t/packaging-fails-with-substepping-enabled/1994988)._