Metasound asset crash

Development Programming & Scripting
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1

Hi, i am upgrade my project to 5.5 and after that i’m can’t open meta sound assets, its crashing all time.

Assertion failed: Class [File:D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentCache.cpp] [Line: 494]

UnrealEditor_MetasoundFrontend!Metasound::Frontend::FDocumentGraphNodeCache::FDocumentGraphNodeCache() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentCache.cpp:494]
UnrealEditor_MetasoundFrontend!SharedPointerInternals::NewIntrusiveReferenceController<1,Metasound::Frontend::FDocumentGraphNodeCache,TSharedRef<Metasound::Frontend::FDocumentCache const,1> & __ptr64,FGuid const & __ptr64>() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Templates\SharedPointerInternals.h:465]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::FDocumentGraphNodeCache::Create() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentCache.cpp:512]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::FDocumentCache::GetNodeCache() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentCache.cpp:233]
UnrealEditor_MetasoundFrontend!FMetaSoundFrontendDocumentBuilder::FindNode() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentBuilder.cpp:2039]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::ReroutePrivate::FRerouteNodeTemplateTransform::Transform() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\NodeTemplates\MetasoundFrontendNodeTemplateReroute.cpp:33]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::DocumentBuilderPrivate::FModifyInterfacesImpl::Execute'::22’::<lambda_1>::operator()() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentBuilder.cpp:2985]
UnrealEditor_MetasoundFrontend!FMetasoundFrontendGraphClass::IterateGraphPages() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocument.cpp:1208]
UnrealEditor_MetasoundFrontend!FMetaSoundFrontendDocumentBuilder::TransformTemplateNodes() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendDocumentBuilder.cpp:2996]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::RegistryPrivate::BuildRegistryDocument() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendRegistryContainerImpl.cpp:65]
UnrealEditor_MetasoundFrontend!Metasound::Frontend::FRegistryContainerImpl::RegisterGraph() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundFrontendRegistryContainerImpl.cpp:484]
UnrealEditor_MetasoundFrontend!FMetasoundAssetBase::UpdateAndRegisterForExecution() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundFrontend\Private\MetasoundAssetBase.cpp:363]
UnrealEditor_MetasoundEngine!UMetaSoundSource::UpdateAndRegisterForExecution() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundEngine\Private\MetasoundSource.cpp:931]
UnrealEditor_MetasoundEditor!Metasound::Editor::FGraphBuilder::RegisterGraphWithFrontend() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundEditor\Private\MetasoundEditorGraphBuilder.cpp:1757]
UnrealEditor_MetasoundEditor!TBaseFunctorDelegateInstance<void __cdecl(UObject & __ptr64,enum Metasound::Engine::ERegistrationAssetContext),FDefaultDelegateUserPolicy,Metasound::Editor::FModule::StartupModule'::2’::<lambda_11> >::ExecuteIfSafe() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:872]
UnrealEditor_MetasoundEngine!TDelegate<void __cdecl(UObject & __ptr64,Metasound::Engine::ERegistrationAssetContext),FDefaultDelegateUserPolicy>::ExecuteIfBound<void,0>() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl:634]
UnrealEditor_MetasoundEngine!Metasound::TAudioBusWriterOperator<8>::GetVertexInterface'::2’::<lambda_1>::operator()() [D:\build++UE5\Sync\Engine\Plugins\Runtime\Metasound\Source\MetasoundEngine\Private\MetasoundEngineModule.cpp:221]
UnrealEditor_MetasoundEngine!Metasound::TExecutableOperator<Metasound::TSendNodeMetasound::FWaveTableBankAsset::TSendOperator>::ExecuteFunction() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:872]
UnrealEditor_CoreUObject!FAsyncLoadingThread2::ProcessLoadedPackagesFromGameThread() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:8361]
UnrealEditor_CoreUObject!FAsyncLoadingThread2::TickAsyncLoadingFromGameThread() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:8433]
UnrealEditor_CoreUObject!FAsyncLoadingThread2::ProcessLoadingFromGameThread() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:9728]
UnrealEditor_CoreUObject!FAsyncLoadingThread2::ProcessLoading() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:3791]
UnrealEditor_CoreUObject!ProcessAsyncLoading() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncPackageLoader.cpp:346]
UnrealEditor_CoreUObject!StaticTick() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:898]
UnrealEditor_UnrealEd!UEditorEngine::Tick() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1752]
UnrealEditor_UnrealEd!UUnrealEdEngine::Tick() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:550]
UnrealEditor!FEngineLoop::Tick() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5869]
UnrealEditor!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:188]
UnrealEditor!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:123]
UnrealEditor!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:277]
UnrealEditor!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:317]
UnrealEditor!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

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2

My fix:

  1. I selected all the MetaSounds in the Content Browser and pressed “Save” in the right-click menu.
  2. It gave me an error message that my MetaSounds are somehow connected to a MetaSound asset I downloaded from FAB.
  3. I deleted that asset and restarted the Editor.
  4. I opened my MetaSounds and saw some “Registering MetaSound asset”, “Registration successfully completed”, " Document changed to 1.14v" windows popping up.
  5. This made all my MetaSounds get a * sign, so I resaved them all.
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