This is a common crash affecting users on Mac and Windows.
User Descriptions
Source Context
3952 void FBlueprintEditor::OnRemoveExecutionPin()
3953 {
3954 TSharedPtr<SGraphEditor> FocusedGraphEd = FocusedGraphEdPtr.Pin();
3955 if (FocusedGraphEd.IsValid())
3956 {
3957 const FScopedTransaction Transaction( LOCTEXT("RemoveExecutionPin", "Remove Execution Pin") );
3958
3959 UEdGraphPin* SelectedPin = FocusedGraphEd->GetGraphPinForMenu();
3960 ***** UEdGraphNode* OwningNode = SelectedPin->GetOwningNode();
3961
3962 OwningNode->Modify();
3963 SelectedPin->Modify();
3964
3965 if (UK2Node_ExecutionSequence* SeqNode = Cast<UK2Node_ExecutionSequence>(OwningNode))
3966 {
3967 SeqNode->RemovePinFromExecutionNode(SelectedPin);
3968 }
3969 else if (UK2Node_Switch* SwitchNode = Cast<UK2Node_Switch>(OwningNode))
3970 {
3971 SwitchNode->RemovePinFromSwitchNode(SelectedPin);
3972 }
3973
3974 // Update the graph so that the node will be refreshed
3975 FocusedGraphEd->NotifyGraphChanged();
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_Kismet!FBlueprintEditor::OnRemoveExecutionPin() blueprinteditor.cpp:3961 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::ExecuteAction() uicommandlist.cpp:97 UE4Editor_Slate!SMenuEntryBlock::OnClicked() smenuentryblock.cpp:1042 UE4Editor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() smenuentryblock.cpp:1002 UE4Editor_Slate!TMemberFunctionCaller<SMenuEntryBlock,FReply() delegateinstanceinterface.h:165 UE4Editor_Slate!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SMenuEntryBlock,FReply() tuple.h:497 UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,FReply __cdecl() delegateinstancesimpl.h:327 UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:537 UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:278 UE4Editor_Slate!SMenuEntryButton::OnMouseButtonUp() smenuentryblock.cpp:399 UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5049 UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:239 UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:5038 UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5515 UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5495 UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1704 UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2127 UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:867 UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:714 user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:1009 UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:3058 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-47261 in the post.