This is an infrequent crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred.
Source Context
47 void UK2Node_MacroInstance::PostPasteNode()
48 {
49 const UBlueprint* InstanceOwner = GetBlueprint();
50
51 // Find the owner of the macro graph
52 const UEdGraph* MacroGraph = MacroGraphReference.GetGraph();
53 ***** UObject* MacroOwner = MacroGraph->GetOuter();
54 UBlueprint* MacroOwnerBP = NULL;
55 while(MacroOwner)
56 {
57 MacroOwnerBP = Cast<UBlueprint>(MacroOwner);
58 if(MacroOwnerBP)
59 {
60 break;
61 }
62
63 MacroOwner = MacroOwner->GetOuter();
64 }
Repro:
Access violation - code c0000005 (first/second chance not available) UE4Editor_BlueprintGraph!UK2Node_MacroInstance::PostPasteNode() [k2node_macroinstance.cpp:54] UE4Editor_UnrealEd!FEdGraphUtilities::PostProcessPastedNodes() [edgraphutilities.cpp:187] UE4Editor_UnrealEd!FEdGraphUtilities::ImportNodesFromText() [edgraphutilities.cpp:384] UE4Editor_Kismet!FBlueprintEditor::PasteNodesHere() [blueprinteditor.cpp:5792] UE4Editor_Kismet!FBlueprintEditor::PasteNodes() [blueprinteditor.cpp:5565] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:216] UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:160] UE4Editor_GraphEditor!SGraphEditorImpl::OnKeyDown() [sgrapheditorimpl.cpp:78] UE4Editor_Slate!<lambda_2afcd964c763e269e2d1a63f3a72f846>::operator() [slateapplication.cpp:4834] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_2afcd964c763e269e2d1a63f3a72f846> >() [slateapplication.cpp:234] UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_2afcd964c763e269e2d1a63f3a72f846>,FKeyEvent>() [slateapplication.cpp:216] UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4832] UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4744] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1560] UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2171] UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:888] UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [windowsapplication.cpp:725] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [windowsplatformapplicationmisc.cpp:129] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3220] UE4Editor!GuardedMain() [launch.cpp:166] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134] UE4Editor!WinMain() [launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [exe_common.inl:253] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-52524 in the post.