A crash occurs when deleting a Concatenator node while a Sound Cue is playing.

Link to Crashreport
[Link Removed]

Steps to Reproduce

1. Create new blank blueprint project with Starter Content.
2. Open the Sound Cue editor and add a Concatenator Node.
3. Plug a Sound Wave into each input for the Concatenator Node (use attached image for reference).
4. Press Play Sound Cue.
5. Delete the Concatenator Node while Sound Cue is playing.

Outcome Crash occurs

Expected Sound Cue stops playing.


UE4Editor_Engine!USoundNodeConcatenator::NotifyWaveInstanceFinished() soundnodeconcatenator.cpp:48
UE4Editor_Engine!FNotifyBufferFinishedHooks::DispatchNotifies() audio.cpp:437
UE4Editor_Engine!FWaveInstance::NotifyFinished() audio.cpp:541
UE4Editor_Engine!FSoundSource::Stop() audio.cpp:200
UE4Editor_Engine!FAudioDevice::StopSources() audiodevice.cpp:2390
UE4Editor_Engine!FAudioDevice::Update() audiodevice.cpp:2566
UE4Editor_Engine!FAudioDeviceManager::UpdateActiveAudioDevices() audiodevicemanager.cpp:276
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1554
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:368
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2775
UE4Editor!GuardedMain() launch.cpp:148
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126
UE4Editor!WinMain() launchwindows.cpp:200
UE4Editor!__scrt_common_main_seh() exe_common.inl:264

Have Comments or More Details?

Head over to the existing AnswerHub thread and let us know what's up.

Login to Vote

ComponentUE - Audio
Affects Versions4.
Target Fix4.12.4
Fix Commit3018038
Main Commit3021299
CreatedJun 16, 2016
ResolvedJun 17, 2016
UpdatedApr 27, 2018