UE5 Crashes when opening level. Was working fine hours ago (Urgent Please)

Development Rendering
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(post deleted by author)

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Hey there @gijoe173d! Are you referencing the compression format setting?

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I’m experiancing the same problems, but this is my code I get

Ensure condition failed:
!UberGraphFramePointerProperty == !UberGraphFunction [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1867]

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffffffffffff

0x00007ffbbd9255bc UnrealEditor-Core.dll!_mi_heap_malloc_zero() [D:\build++UE5\Sync\Engine\Source\ThirdParty\mimalloc\2.0.0\src\alloc.c:147]
0x00007ffbbd28d5b7 UnrealEditor-Core.dll!FMallocMimalloc::Realloc() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\MallocMimalloc.cpp:155]
0x00007ffbbd28da73 UnrealEditor-Core.dll!FMemory::Realloc() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\HAL\FMemory.inl:134]
0x00007ffbbd157768 UnrealEditor-Core.dll!TSizedHeapAllocator<32,FMemory>::ForAnyElementType::ResizeAllocation() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\ContainerAllocationPolicies.h:746]
0x00007ffbbd15c1b7 UnrealEditor-Core.dll!TArray<wchar_t,TSizedDefaultAllocator<32> >::ResizeTo() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h:3174]
0x00007ffbbd12009e UnrealEditor-Core.dll!FString::FString() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Containers\String.cpp.inl:230]
0x00007ffbbd611997 UnrealEditor-Core.dll!FConditionalScopeLogTime::~FConditionalScopeLogTime() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Stats\StatsMisc.cpp:58]
0x00007ffbbd3e4b1a UnrealEditor-Core.dll!FDebug::EnsureFailed() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:540]
0x00007ffbbd3f93c3 UnrealEditor-Core.dll!FDebug::OptionallyLogFormattedEnsureMessageReturningFalseImpl() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:713]
0x00007ffbbdd51384 UnrealEditor-Core.dll!CheckVerifyImpl() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:769]
0x00007ffbbdd514b8 UnrealEditor-Core.dll!UE::Assert::Private::ExecCheckImplInternal() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:793]
0x00007ffb74dd36c7 UnrealEditor-Engine.dll!UBlueprintGeneratedClass::CreatePersistentUberGraphFrame() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp:1867]
0x00007ffbc10f6a77 UnrealEditor-CoreUObject.dll!UObject::PostInitProperties() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:3685]
0x00007ffb748b4b8f UnrealEditor-Engine.dll!AActor::PostInitProperties() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Actor.cpp:434]
0x00007ffbc10f665c UnrealEditor-CoreUObject.dll!FObjectInitializer::PostConstructInit() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:4057]
0x00007ffbc10bcae8 UnrealEditor-CoreUObject.dll!FObjectInitializer::~FObjectInitializer() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:3888]
0x00007ffbc0ce36e9 UnrealEditor-CoreUObject.dll!UClass::CreateDefaultObject() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:4883]
0x00007ffbc0d00183 UnrealEditor-CoreUObject.dll!UClass::InternalCreateDefaultObjectWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:5492]
0x00007ffbc0e7e4f9 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5462]
0x00007ffbc0c05ada UnrealEditor-CoreUObject.dll!FAsyncPackage2::CreateLinkerLoadExports() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:6152]
0x00007ffbc0c12525 UnrealEditor-CoreUObject.dll!FAsyncPackage2::Event_CreateLinkerLoadExports() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:6336]
0x00007ffbc0c18e7c UnrealEditor-CoreUObject.dll!FEventLoadNode2::Execute() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:4960]
0x00007ffbc0c1■■■5 UnrealEditor-CoreUObject.dll!FAsyncLoadEventQueue2::ExecuteSyncLoadEvents() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:5167]
0x00007ffbc0c39896 UnrealEditor-CoreUObject.dll!FAsyncLoadingThread2::ProcessAsyncLoadingFromGameThread() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:8091]
0x00007ffbc0c5e5f9 UnrealEditor-CoreUObject.dll!FAsyncLoadingThread2::TickAsyncLoadingFromGameThread() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:8440]
0x00007ffbc0c20e24 UnrealEditor-CoreUObject.dll!FAsyncLoadingThread2::FlushLoading() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:9923]
0x00007ffbc0c8cced UnrealEditor-CoreUObject.dll!FlushAsyncLoading() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncPackageLoader.cpp:327]
0x00007ffbc0c8c9dc UnrealEditor-CoreUObject.dll!FlushAsyncLoading() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncPackageLoader.cpp:296]
0x00007ffbc10f0ba7 UnrealEditor-CoreUObject.dll!LoadPackageInternal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1757]
0x00007ffbc10efe65 UnrealEditor-CoreUObject.dll!LoadPackage() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:2121]
0x00007ffbc10f0466 UnrealEditor-CoreUObject.dll!LoadPackage() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:2097]
0x00007ffbc1126464 UnrealEditor-CoreUObject.dll!StaticLoadObjectInternal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1420]
0x00007ffbc112589a UnrealEditor-CoreUObject.dll!StaticLoadObject() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1466]
0x00007ffbc0fe4a02 UnrealEditor-CoreUObject.dll!FObjectPropertyBase::FindImportedObject() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyBaseObject.cpp:592]
0x00007ffbc0ffa0ef UnrealEditor-CoreUObject.dll!FObjectPropertyBase::ParseObjectPropertyValue() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyBaseObject.cpp:394]
0x00007ffbc0ff37ec UnrealEditor-CoreUObject.dll!FObjectPropertyBase::ImportText_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyBaseObject.cpp:426]
0x00007ffbc0ff35bd UnrealEditor-CoreUObject.dll!FObjectProperty::ImportText_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyObject.cpp:330]
0x00007ffbc0ff18b2 UnrealEditor-CoreUObject.dll!FClassProperty::ImportText_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyClass.cpp:114]
0x00007ffba47d4679 UnrealEditor-UnrealEd.dll!FBlueprintEditorUtils::PropertyValueFromString_Direct() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Kismet2\BlueprintEditorUtils.cpp:9218]
0x00007ffba4fc72ce UnrealEditor-UnrealEd.dll!UUserDefinedStructEditorData::ReinitializeDefaultInstance() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UserDefinedStructEditorData.cpp:252]
0x00007ffbc0d11653 UnrealEditor-CoreUObject.dll!UUserDefinedStruct::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\StructUtils\UserDefinedStruct.cpp:133]
0x00007ffbc0b5c7ab UnrealEditor-CoreUObject.dll!UUserDefinedStruct::Serialize() [D:\build++UE5\Sync\Engine\Intermediate\Build\Win64\UnrealEditor\Inc\CoreUObject\UHT\UserDefinedStruct.gen.cpp:208]
0x00007ffbc0eaeb03 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4770]
0x00007ffbc0d08769 UnrealEditor-CoreUObject.dll!UUserDefinedStruct::RecursivelyPreload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\StructUtils\UserDefinedStruct.cpp:387]
0x00007ffbc0ffb00a UnrealEditor-CoreUObject.dll!PreloadInnerStructMembers() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyStruct.cpp:30]
0x00007ffbc0ffea99 UnrealEditor-CoreUObject.dll!FStructProperty::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyStruct.cpp:242]
0x00007ffbc0fb09ef UnrealEditor-CoreUObject.dll!FArrayProperty::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyArray.cpp:803]
0x00007ffbc0d194cc UnrealEditor-CoreUObject.dll!UStruct::SerializeProperties() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:2176]
0x00007ffbc0d10de7 UnrealEditor-CoreUObject.dll!UStruct::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:2298]
0x00007ffbc0d0fa8e UnrealEditor-CoreUObject.dll!UClass::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:5593]
0x00007ffb74e1e5cb UnrealEditor-Engine.dll!UBlueprintGeneratedClass::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp:2536]
0x00007ffbc0eaeb03 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4770]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b58fa7 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1595]
0x00007ffbc0eaed48 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5892f UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveAllImports() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1898]
0x00007ffbc0b40485 UnrealEditor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1989]
0x00007ffbc0b4047d UnrealEditor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1979]
0x00007ffbc0eaed53 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b58fa7 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1595]
0x00007ffbc0b590a6 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1544]
0x00007ffbc0eaed48 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b58fa7 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1595]
0x00007ffbc0b58a23 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveAllImports() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1911]
0x00007ffbc0b40485 UnrealEditor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1989]
0x00007ffbc0eaed53 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b58fa7 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1595]
0x00007ffbc0eaed48 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b58fa7 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1595]
0x00007ffbc0b58a23 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveAllImports() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1911]
0x00007ffbc0b40485 UnrealEditor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1989]
0x00007ffbc0eaed53 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4824]
0x00007ffbc0e7eb17 UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateExport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5615]
0x00007ffbc0e7fefb UnrealEditor-CoreUObject.dll!FLinkerLoad::CreateImport() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:5799]
0x00007ffbc0b5ad12 UnrealEditor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Blueprint\BlueprintSupport.cpp:1769]
0x00007ffbc0b

This happens when I open an asset or level. But I’m pretty sure it’s not because of shaders since it does this for Blueprints as well.