Description

This is an infrequent Mac crash that has occurred for users since 4.16. Users have not provided any descriptions of their actions when the crash occurred.

There is no record of a similar callstack occurring on Windows.

Callstack from Log

2017.09.08-20.53.38:274][ 74]LogSavePackage: Display: Finished SavePackage ../../../../../../***/Desktop/Unreal Projects/***/Content/Audio/SoundCues/Footsteps/Footstep_BrokenStone.uasset
[2017.09.08-20.53.46:185][376]LogLinker: Warning: Can't find file '/Game/Audio/SoundCues/Footsteps/Footstep_BrokenStone1'
[2017.09.08-20.53.46:185][376]LogLinker: Warning: Can't find file '/Game/Audio/SoundCues/Footsteps/Footstep_BrokenStone1'
[2017.09.08-20.53.46:185][376]LogUObjectGlobals: Warning: Failed to find object 'Object /Game/Audio/SoundCues/Footsteps/Footstep_BrokenStone1.Footstep_BrokenStone1'
[2017.09.08-20.54.24:117][336]LogEditorTransaction: Undo Delete Selected Sound Cue Node
[2017.09.08-20.54.57:241][  6]LogMac: === Critical error: ===
SIGSEGV: invalid attempt to access memory at address 0x0

[2017.09.08-20.54.57:241][  6]LogMac: FSoundCueEditor::DeleteInput() Address = 0x24d5d167 (filename not found) [in UE4Editor-AudioEditor.dylib]
TBaseSPMethodDelegateInstance<false, FSoundCueEditor, (ESPMode)0, TTypeWrapper<void> ()>::Execute() const Address = 0x24dc509b (filename not found) [in UE4Editor-AudioEditor.dylib]
TBaseSPMethodDelegateInstance<false, FSoundCueEditor, (ESPMode)0, void ()>::ExecuteIfSafe() const Address = 0x24dc513b (filename not found) [in UE4Editor-AudioEditor.dylib]
FUICommandList::ExecuteAction(TSharedRef<FUICommandInfo const, (ESPMode)0>) const Address = 0xed274d5  (filename not found) [in UE4Editor-Slate.dylib]
SMenuEntryBlock::OnClicked(bool) Address = 0xee5d75a  (filename not found) [in UE4Editor-Slate.dylib]
SMenuEntryBlock::OnMenuItemButtonClicked() Address = 0xee4aef6  (filename not found) [in UE4Editor-Slate.dylib]
TBaseSPMethodDelegateInstance<false, SMenuEntryBlock, (ESPMode)0, FReply ()>::Execute() const Address = 0xeee41b1  (filename not found) [in UE4Editor-Slate.dylib]
SButton::OnMouseButtonUp(FGeometry const&, FPointerEvent const&) Address = 0xef3ccdf  (filename not found) [in UE4Editor-Slate.dylib]
SMenuEntryButton::OnMouseButtonUp(FGeometry const&, FPointerEvent const&) Address = 0xeee5ac8  (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::RoutePointerUpEvent(FWidgetPath&, FPointerEvent&) Address = 0xecf4f74  (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent&) Address = 0xec920da  (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::OnMouseUp(EMouseButtons::Type, FVector2D) Address = 0xecfe5fd  (filename not found) [in UE4Editor-Slate.dylib]
FMacApplication::ProcessEvent(FDeferredMacEvent const&) Address = 0xc75a90b  (filename not found) [in UE4Editor-Core.dylib]
FMacApplication::ProcessDeferredEvents(float) Address = 0xc7587bf  (filename not found) [in UE4Editor-Core.dylib]
FSlateApplication::TickPlatform(float) Address = 0xecc066b  (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::Tick(ESlateTickType) Address = 0xecbfaa4  (filename not found) [in UE4Editor-Slate.dylib]
FEngineLoop::Tick() Address = 0xc479011  (filename not found) [in UE4Editor]
GuardedMain(wchar_t const*) Address = 0xc47fc22  (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0xc48d5d0  (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0xc74fcc6  (filename not found) [in UE4Editor-Core.dylib]
__NSThread__start__() Address = 0xcb7e88ad (filename not found) [in Foundation]
_pthread_body() Address = 0xdf75e93b (filename not found) [in libsystem_pthread.dylib]
_pthread_body() Address = 0xdf75e887 (filename not found) [in libsystem_pthread.dylib]
thread_start() Address = 0xdf75e08d (filename not found) [in libsystem_pthread.dylib]
Steps to Reproduce

repro steps currently unknown

Callstack
SEGV_MAPERR at 0x0

UE4Editor-AudioEditor.dylib!FSoundCueEditor::DeleteInput()
UE4Editor-AudioEditor.dylib!TBaseSPMethodDelegateInstance<false, FSoundCueEditor, (ESPMode)0, TTypeWrapper<void> ()>::Execute()
UE4Editor-AudioEditor.dylib!TBaseSPMethodDelegateInstance<false, FSoundCueEditor, (ESPMode)0, void ()>::ExecuteIfSafe()
UE4Editor-Slate.dylib!FUICommandList::ExecuteAction(TSharedRef<FUICommandInfo const,()
UE4Editor-Slate.dylib!SMenuEntryBlock::OnClicked()
UE4Editor-Slate.dylib!SMenuEntryBlock::OnMenuItemButtonClicked()
UE4Editor-Slate.dylib!TBaseSPMethodDelegateInstance<false, SMenuEntryBlock, (ESPMode)0, FReply ()>::Execute()
UE4Editor-Slate.dylib!SButton::OnMouseButtonUp()
UE4Editor-Slate.dylib!SMenuEntryButton::OnMouseButtonUp()
UE4Editor-Slate.dylib!FSlateApplication::RoutePointerUpEvent()
UE4Editor-Slate.dylib!FSlateApplication::ProcessMouseButtonUpEvent()
UE4Editor-Slate.dylib!FSlateApplication::OnMouseUp()
UE4Editor-Core.dylib!FMacApplication::ProcessEvent()
UE4Editor-Core.dylib!FMacApplication::ProcessDeferredEvents()
UE4Editor-Slate.dylib!FSlateApplication::TickPlatform()
UE4Editor-Slate.dylib!FSlateApplication::Tick()
UE4Editor!FEngineLoop::Tick()
UE4Editor!GuardedMain()
UE4Editor!<Unknown>
UE4Editor-Core.dylib!<Unknown>
Foundation!Unknown()
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>

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Fixed
ComponentUE - Platform - Mac
Affects Versions4.164.17
Target Fix4.19
Fix Commit3644124
Main Commit3683447
Release Commit3813083
CreatedSep 14, 2017
ResolvedSep 14, 2017
UpdatedApr 27, 2018