This issue occurs NO MATTER your deployment type. (e.g. PIE, Launch, Package...)

This is BLOCKING all deployment from the Mac platform.

This is a regression and does not occur on Windows.

Steps to Reproduce
  1. Open a new project on Mac
  2. Click the arrow next to launch and select your mac

Result: Editor crashes

Play in editor repro:

  1. Open QAGame in editor on Mac.
  2. Play in viewport.
  3. Fire the weapon.



2017.04.17-12.54.24:295][504]LogMac: === Critical error: ===
SIGSEGV: invalid attempt to access memory at address 0xc

[2017.04.17-12.54.24:296][504]LogMac: FCoreAudioSoundSource::Init(FWaveInstance*) Address = 0x31278490 (filename not found) [in UE4Editor-CoreAudio.dylib]
FAudioDevice::StartSources(TArray<FWaveInstance*, FDefaultAllocator>&, int, bool) Address = 0x12d6e036 (filename not found) [in UE4Editor-Engine.dylib]
FAudioDevice::Update(bool) Address = 0x12d6fb7f (filename not found) [in UE4Editor-Engine.dylib]
FAudioDeviceManager::UpdateActiveAudioDevices(bool) Address = 0x12d81711 (filename not found) [in UE4Editor-Engine.dylib]
UEditorEngine::Tick(float, bool) Address = 0xfe34acb  (filename not found) [in UE4Editor-UnrealEd.dylib]
UUnrealEdEngine::Tick(float, bool) Address = 0x10a9119c (filename not found) [in UE4Editor-UnrealEd.dylib]
FEngineLoop::Tick() Address = 0xc660202  (filename not found) [in UE4Editor]
GuardedMain(wchar_t const*) Address = 0xc667a62  (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0xc675f3c  (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0xcea35a6  (filename not found) [in UE4Editor-Core.dylib]
__NSThread__start__() Address = 0xb8fb0b3d (filename not found) [in Foundation]
_pthread_body() Address = 0x124fe93b (filename not found) [in libsystem_pthread.dylib]
_pthread_body() Address = 0x124fe887 (filename not found) [in libsystem_pthread.dylib]
thread_start() Address = 0x124fe08d (filename not found) [in libsystem_pthread.dylib]

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Affects Versions4.16
Target Fix4.16
Fix Commit3396129
Main Commit3427032
Release Commit3396129
CreatedApr 17, 2017
ResolvedApr 17, 2017
UpdatedSep 29, 2017