Child Actor Audio Volume Makes UE4 Crash

When creating an actor, adding a child actor component to it, and setting that child to a Audio Volume the Editor will crash if you try to change any of the Audio Volume settings.

1. Create an actor of any type.
2. Add a Child Actor component in the actor.
3. Select "Audio Volume" from the Child Actor Class.
4. In the child actor template, change any settings.

Results: The Editor locks up for a moment and eventually crashes.

Expected: 

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Engine!UWorld::GetAudioDevice() [d:\build\++ue4\sync\engine\source\runtime\engine\private\levelactor.cpp:1426]
UE4Editor_Engine!AAudioVolume::AddProxy() [d:\build\++ue4\sync\engine\source\runtime\engine\private\audiovolume.cpp:213]
UE4Editor_CoreUObject!UObject::PostEditChangeChainProperty() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:445]
UE4Editor_PropertyEditor!FPropertyNode::NotifyPostChange() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertynode.cpp:2122]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:545]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:333]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:242]
UE4Editor_PropertyEditor!FPropertyHandleBool::SetValue() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:3432]
UE4Editor_PropertyEditor!SPropertyEditorBool::OnCheckStateChanged() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\userinterface\propertyeditor\spropertyeditorbool.cpp:79]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,void __cdecl(enum ECheckBoxState)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:355]
UE4Editor_Slate!SCheckBox::OnMouseButtonUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:191]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:270]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5528]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:6087]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:6060]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1831]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2281]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:929]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:766]
user32
user32
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:130]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3615]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:174]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:276]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
kernel32
ntdll

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