[5.4 upgrade] Crash due to cyclic dependency

Development Programming & Scripting
,
1

Hi,

We just upgraded to 5.4, and noticed that the game crashed during startup with the following warning:

LogBlueprintSupport: Warning: Object Default__BP_Creature_Baller_Baby_C still has a LinkerPlaceholderExportObject 'PLACEHOLDER-INST_of_BP_Action_Eat_C_0' in property InstancedActionHelpers. This indicates a failure to resolve every deferred/circular dependency in blueprints.

and the callstack:

Assertion failed: IsImport() [File:D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject\ObjectResource.h] [Line: 74]

UnrealEditor_CoreUObject!FBlueprintSupport::RepairDeferredDependenciesInObject() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:260]
UnrealEditor_Kismet!FBlueprintCompilationManagerImpl::ReinstanceBatch() [D:\build\++UE5\Sync\Engine\Source\Editor\Kismet\Private\BlueprintCompilationManager.cpp:2525]
UnrealEditor_Kismet!FBlueprintCompilationManagerImpl::FlushCompilationQueueImpl() [D:\build\++UE5\Sync\Engine\Source\Editor\Kismet\Private\BlueprintCompilationManager.cpp:1597]
UnrealEditor_Kismet!FBlueprintCompilationManager::FlushCompilationQueue() [D:\build\++UE5\Sync\Engine\Source\Editor\Kismet\Private\BlueprintCompilationManager.cpp:3696]
UnrealEditor_CoreUObject!FScopedClassDependencyGather::~FScopedClassDependencyGather() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:489]
UnrealEditor_CoreUObject!FLinkerLoad::CreateExport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
UnrealEditor_CoreUObject!FLinkerLoad::IndexToObject() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5908]
UnrealEditor_CoreUObject!FLinkerLoad::CreateExport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5037]
UnrealEditor_CoreUObject!FLinkerLoad::IndexToObject() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5908]
UnrealEditor_CoreUObject!FLinkerLoad::CreateExport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5165]
UnrealEditor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4014]
UnrealEditor_CoreUObject!FLinkerLoad::LoadAllObjects() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4243]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1892]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!`FLinkerLoad::VerifyImportInner'::`2'::<lambda_1>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3527]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3662]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImportInner() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3691]
UnrealEditor_CoreUObject!FLinkerLoad::VerifyImport() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:3168]
UnrealEditor_CoreUObject!FLinkerLoad::Verify() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2921]
UnrealEditor_CoreUObject!FLinkerLoad::FinalizeCreation() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:2723]
UnrealEditor_CoreUObject!FLinkerLoad::ProcessPackageSummary() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:893]
UnrealEditor_CoreUObject!FLinkerLoad::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:943]
UnrealEditor_CoreUObject!FLinkerLoad::CreateLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:561]
UnrealEditor_CoreUObject!GetPackageLinker() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Linker.cpp:836]
UnrealEditor_CoreUObject!LoadPackageInternal() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1777]
UnrealEditor_CoreUObject!LoadPackage() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:2068]
UnrealEditor_CoreUObject!LoadPackage() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:2044]
UnrealEditor_UnrealEd!UEditorEngine::Map_Load() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2590]
UnrealEditor_UnrealEd!UEditorEngine::HandleMapCommand() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:6162]
UnrealEditor_UnrealEd!UEditorEngine::Exec_Editor() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:5623]
UnrealEditor_Core!FExec::Exec() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Private\Misc\Exec.cpp:18]
UnrealEditor_Engine!UEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\UnrealEngine.cpp:4759]
UnrealEditor_UnrealEd!UUnrealEdEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdSrv.cpp:662]
UnrealEditor_UnrealEd!FEditorFileUtils::LoadMap() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\FileHelpers.cpp:2941]
UnrealEditor_UnrealEd!FEditorFileUtils::LoadDefaultMapAtStartup() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\FileHelpers.cpp:4971]
UnrealEditor_UnrealEd!FUnrealEdMisc::OnInit() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdMisc.cpp:374]
UnrealEditor_UnrealEd!EditorInit() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdGlobals.cpp:135]
UnrealEditor_Win64_DebugGame!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:158]
UnrealEditor_Win64_DebugGame!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:118]
UnrealEditor_Win64_DebugGame!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:258]
UnrealEditor_Win64_DebugGame!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:298]
UnrealEditor_Win64_DebugGame!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

After setting linker.EnableFullBlueprintPreloading to false, the crash no longer occurs.

Accordingly to https://dev.epicgames.com/documentation/en-us/unreal-engine/unreal-engine-5.4-release-notes:

If you suspect there's a load-related issue with change, try disabling "linker.EnableFullBlueprintPreloading", and then report the issue on UDN.

However, we don’t have access to UDN, so trying to report the issue here to try to help out pinpoint the information Epic is needing to be able to reproduce the bug internally and make the new BP loading more stable. If we are going to make a minimal reproduction case we would need some help trying to figure out what information is actually needed to make it as small as possible as we have quite tightly coupled code.

Cheers,
Markus

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