Cannot open load any Blueprint

Development Programming & Scripting Blueprint
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1

Trying to load any blueprint results in a crash. blueprints work in PIE. basically cannot open edit blueprints anymore?

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000

UE4Editor_Engine!UEdGraphNode::PostLoad() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphNode.cpp:662]
UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp:1067]
UE4Editor_CoreUObject!EndLoad() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1592]
UE4Editor_CoreUObject!::operator()() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1231]
UE4Editor_CoreUObject!LoadPackageInternal() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1332]
UE4Editor_CoreUObject!LoadPackage() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1427]
UE4Editor_CoreUObject!ResolveName() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:767]
UE4Editor_CoreUObject!StaticLoadObjectInternal() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:829]
UE4Editor_CoreUObject!StaticLoadObject() [D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:904]
UE4Editor_Kismet!FBlueprintEditor::LoadLibrariesFromAssetRegistry() [D:\Build\++UE4\Sync\Engine\Source\Editor\Kismet\Private\BlueprintEditor.cpp:1778]
UE4Editor_Kismet!FBlueprintEditor::CommonInitialization() [D:\Build\++UE4\Sync\Engine\Source\Editor\Kismet\Private\BlueprintEditor.cpp:1705]
UE4Editor_Kismet!FBlueprintEditor::InitBlueprintEditor() [D:\Build\++UE4\Sync\Engine\Source\Editor\Kismet\Private\BlueprintEditor.cpp:1855]
UE4Editor_Kismet!FBlueprintEditorModule::CreateBlueprintEditor() [D:\Build\++UE4\Sync\Engine\Source\Editor\Kismet\Private\BlueprintEditorModule.cpp:270]
UE4Editor_AssetTools!FAssetTypeActions_Blueprint::OpenAssetEditor() [D:\Build\++UE4\Sync\Engine\Source\Developer\AssetTools\Private\AssetTypeActions\AssetTypeActions_Blueprint.cpp:93]
UE4Editor_UnrealEd!UAssetEditorSubsystem::OpenEditorForAsset() [D:\Build\++UE4\Sync\Engine\Source\Editor\UnrealEd\Private\Subsystems\AssetEditorSubsystem.cpp:361]
UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [D:\Build\++UE4\Sync\Engine\Source\Editor\ContentBrowser\Private\SContentBrowser.cpp:2314]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArray > const &,enum EAssetTypeActivationMethod::Type)>::ExecuteIfSafe() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:374]
UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [D:\Build\++UE4\Sync\Engine\Source\Editor\ContentBrowser\Private\SAssetView.cpp:4409]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr)>::ExecuteIfSafe() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:374]
UE4Editor_ContentBrowser!TBaseDelegate >::ExecuteIfBound() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl:673]
UE4Editor_ContentBrowser!SListView >::Private_OnItemDoubleClicked() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views\SListView.h:932]
UE4Editor_ContentBrowser!STableRow >::OnMouseButtonDoubleClick() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views\STableRow.h:337]
UE4Editor_Slate!FEventRouter::Route >() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:372]
UE4Editor_Slate!FSlateApplication::RoutePointerDoubleClickEvent() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5126]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5113]
UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5079]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [D:\Build\++UE4\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2144]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [D:\Build\++UE4\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2592]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [D:\Build\++UE4\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:1816]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [D:\Build\++UE4\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:852]
user32
user32
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [D:\Build\++UE4\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp:130]
UE4Editor!FEngineLoop::Tick() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:4762]
UE4Editor!GuardedMain() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:169]
UE4Editor!GuardedMainWrapper() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:137]
UE4Editor!WinMain() [D:\Build\++UE4\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:268]
UE4Editor!__scrt_common_main_seh() [d:\agent\_work\5\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll
2

Unrelated BP in the project got corrupted in a typical crash. This caused an error in simply opening up blueprint editor. Hopefully the engineers can look into the crash info send in crash reporter.

If you don’t use real time file backup software then fix it by duplicating project and then isolating groups of folders in content folder by deleting them in explorer and retesting. Just replace the culprit with a backup file before the crash.

3

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4

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