Hi Everyone, I have been having an small issue with UE5.7.1 lately where each time that I recompile from editor I get the errors:
LogOutputDevice: Error: Ensure condition failed: UE::Private::FMTAccessDetectorOptions::bSuppressCheckFailure [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h] [Line: 646]
Data race detected: acquiring write access on thread 6784 concurrently with 1 writers on thread 20936:
Current thread 6784 callstack:
0x0000024e2818b877 UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::GetCurrentThreadCallstack() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:413]
0x0000024e2842398a UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::AcquireWriteAccess’::17’::<lambda_4>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:646]
0x0000024e2816fa27 UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::AcquireWriteAccess() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:646]
0x0000024e28196887 UnrealEditor-RigVMDeveloper.dll!TDelegateAccessHandlerBase::GetWriteAccessScope() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateAccessHandler.h:169]
0x0000024e2814bc39 UnrealEditor-RigVMDeveloper.dll!TMulticastDelegateBase::AddDelegateInstance<TDelegate<void __cdecl(enum ERigVMGraphNotifType,URigVMGraph *,UObject *),FDefaultDelegateUserPolicy> >() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\MulticastDelegateBase.h:323]
0x0000024e28388e5e UnrealEditor-RigVMDeveloper.dll!URigVMController::SetActionStack() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMController.cpp:24480]
0x0000024e28302d85 UnrealEditor-RigVMDeveloper.dll!URigVMController::URigVMController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMController.cpp:136]
0x00007ffc9916f799 UnrealEditor-CoreUObject.dll!StaticConstructObject_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:4969]
0x0000024e282739e8 UnrealEditor-RigVMDeveloper.dll!FRigVMClient::CreateController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMClient.cpp:1206]
0x0000024e28292bf7 UnrealEditor-RigVMDeveloper.dll!FRigVMClient::GetOrCreateController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMClient.cpp:542]
0x0000024e281b1ea8 UnrealEditor-RigVMDeveloper.dll!IRigVMAssetInterface::SerializeImpl() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMAsset.cpp:1380]
0x00007ffc4315cb6d UnrealEditor-UnrealEd.dll!FAsyncTaskFReload::ReplaceReferencesToReconstructedCDOs’::2’::FFindRefTask::DoTaskWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:655]
0x00007ffc4315cc71 UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:289]
0x00007ffc4315cbbe UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoThreadedWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:313]
0x00007ffc99a0e568 UnrealEditor-Core.dll!FQueuedThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\ThreadingBase.cpp:1471]
0x00007ffc99e766a8 UnrealEditor-Core.dll!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:159]
0x00007ffc99e6f58c UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:71]
0x00007ffd4432259d KERNEL32.DLL!UnknownFunction
0x00007ffd4536af78 ntdll.dll!UnknownFunction
Writer thread 20936 callstack:
0x00007ffd45336cf2 ntdll.dll!UnknownFunction
0x00007ffc99d08e51 UnrealEditor-Core.dll!FCurrentCustomVersions::Get() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\CustomVersion.cpp:202]
0x00007ffc99d22c1b UnrealEditor-Core.dll!FCustomVersionContainer::SetVersionUsingRegistry() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\CustomVersion.cpp:422]
0x00007ffc99d2997d UnrealEditor-Core.dll!FArchive::UsingCustomVersion() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp:599]
0x00007ffc99a7df24 UnrealEditor-Core.dll!FText::SerializeText() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\Text.cpp:862]
0x00007ffc99a7de9e UnrealEditor-Core.dll!FText::SerializeText() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\Text.cpp:847]
0x00007ffc99cf0e7e UnrealEditor-Core.dll!FArchive::operator<<() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp:472]
0x00007ffc95385cf2 UnrealEditor-Engine.dll!UEdGraphPin::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphPin.cpp:1886]
0x00007ffc953878e3 UnrealEditor-Engine.dll!UEdGraphPin::SerializePin() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphPin.cpp:2291]
0x00007ffc95387e54 UnrealEditor-Engine.dll!UEdGraphPin::SerializePinArray() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphPin.cpp:2094]
0x00007ffc95385a73 UnrealEditor-Engine.dll!UEdGraphNode::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphNode.cpp:260]
0x00007ffc24b60688 UnrealEditor-BlueprintGraph.dll!UK2Node::Serialize() [D:\build++UE5\Sync\Engine\Source\Editor\BlueprintGraph\Private\K2Node.cpp:137]
0x00007ffc24b6120f UnrealEditor-BlueprintGraph.dll!UK2Node_CallFunction::Serialize() [D:\build++UE5\Sync\Engine\Source\Editor\BlueprintGraph\Private\K2Node_CallFunction.cpp:2308]
0x00007ffc4315cb6d UnrealEditor-UnrealEd.dll!FAsyncTaskFReload::ReplaceReferencesToReconstructedCDOs’::2’::FFindRefTask::DoTaskWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:655]
0x00007ffc4315cc71 UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:289]
0x00007ffc4315cbbe UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoThreadedWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:313]
0x00007ffc99a0e568 UnrealEditor-Core.dll!FQueuedThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\ThreadingBase.cpp:1471]
0x00007ffc99e766a8 UnrealEditor-Core.dll!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:159]
0x00007ffc99e6f58c UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:71]
0x00007ffd4432259d KERNEL32.DLL!UnknownFunction
LogStats: FDebug::EnsureFailed - 0.000 s
LogOutputDevice: Error: Ensure condition failed: UE::Private::FMTAccessDetectorOptions::bSuppressCheckFailure [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h] [Line: 661]
Data race detected: other thread(s) activity during acquiring write access on thread 6784: 0 → 0 readers, 1 → 0 writers on thread 20936 → 4294967295:
Current thread 6784 callstack:
0x0000024e2818b877 UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::GetCurrentThreadCallstack() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:413]
0x0000024e28423b00 UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::AcquireWriteAccess’::20’::<lambda_5>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:661]
0x0000024e2816fa8c UnrealEditor-RigVMDeveloper.dll!FMRSWRecursiveAccessDetector::AcquireWriteAccess() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\MTAccessDetector.h:670]
0x0000024e28196887 UnrealEditor-RigVMDeveloper.dll!TDelegateAccessHandlerBase::GetWriteAccessScope() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateAccessHandler.h:169]
0x0000024e2814bc39 UnrealEditor-RigVMDeveloper.dll!TMulticastDelegateBase::AddDelegateInstance<TDelegate<void __cdecl(enum ERigVMGraphNotifType,URigVMGraph *,UObject *),FDefaultDelegateUserPolicy> >() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\MulticastDelegateBase.h:323]
0x0000024e28388e5e UnrealEditor-RigVMDeveloper.dll!URigVMController::SetActionStack() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMController.cpp:24480]
0x0000024e28302d85 UnrealEditor-RigVMDeveloper.dll!URigVMController::URigVMController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMController.cpp:136]
0x00007ffc9916f799 UnrealEditor-CoreUObject.dll!StaticConstructObject_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:4969]
0x0000024e282739e8 UnrealEditor-RigVMDeveloper.dll!FRigVMClient::CreateController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMClient.cpp:1206]
0x0000024e28292bf7 UnrealEditor-RigVMDeveloper.dll!FRigVMClient::GetOrCreateController() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMModel\RigVMClient.cpp:542]
0x0000024e281b1ea8 UnrealEditor-RigVMDeveloper.dll!IRigVMAssetInterface::SerializeImpl() [D:\build++UE5\Sync\Engine\Plugins\Runtime\RigVM\Source\RigVMDeveloper\Private\RigVMAsset.cpp:1380]
0x00007ffc4315cb6d UnrealEditor-UnrealEd.dll!FAsyncTaskFReload::ReplaceReferencesToReconstructedCDOs’::2’::FFindRefTask::DoTaskWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:655]
0x00007ffc4315cc71 UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:289]
0x00007ffc4315cbbe UnrealEditor-UnrealEd.dll!FAsyncTaskBase::DoThreadedWork() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:313]
0x00007ffc99a0e568 UnrealEditor-Core.dll!FQueuedThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\ThreadingBase.cpp:1471]
0x00007ffc99e766a8 UnrealEditor-Core.dll!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:159]
0x00007ffc99e6f58c UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:71]
0x00007ffd4432259d KERNEL32.DLL!UnknownFunction
0x00007ffd4536af78 ntdll.dll!UnknownFunction
Writer thread 4294967295 callstack:
[none]
I’m not sure why this is happening, if anyone can take a guess of what the cause of this is, I would really like to hear about it.