I did a one line change to the Source → compiled it via Editor → pressed Play → crash
It still occurs after reverting my changes.
After pressing Play UE gets unresponsive / inactive in Taskmngr, I can watch the RAM usage raise 0,5GB /sec until it hits ~98% and crashes the Editor.
After verifying via Library it works again until I compile it.
Crash msg:
MachineId:C3FE908B4119DCA483FD5E9CF0FE9926
EpicAccountId:20648807b31b4da0a254d11f8125312e
Unknown exception - code 00000001 (first/second chance not available)
"Assertion failed: AudioDevice [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Windows\XAudio2\Private\XAudio2Source.cpp] [Line: 402]
"
KERNELBASE
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FOutputDevice::Logf__VA() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355]
UE4Editor_XAudio2!FXAudio2SoundSource::Init() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\windows\xaudio2\private\xaudio2source.cpp:402]
UE4Editor_Engine!FAudioDevice::StartSources() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\audiodevice.cpp:1826]
UE4Editor_Engine!FAudioDevice::Update() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\audiodevice.cpp:1904]
UE4Editor_Engine!FAudioDeviceManager::UpdateActiveAudioDevices() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\audiodevicemanager.cpp:263]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorengine.cpp:1538]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedengine.cpp:366]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2359]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]