Crash closing animation blueprint after compile

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000198

UE4Editor-Engine.dll!UActorComponent::UnregisterComponent() [d:\animphys\engine\source\runtime\engine\private\components\actorcomponent.cpp:1009]
UE4Editor-Engine.dll!FPreviewScene::~FPreviewScene() [d:\animphys\engine\source\runtime\engine\private\previewscene.cpp:80]
UE4Editor-Persona.dll!FAnimationEditorPreviewScene::`scalar deleting destructor'()
UE4Editor-Persona.dll!FPersonaToolkit::~FPersonaToolkit() [d:\animphys\engine\source\editor\persona\private\personatoolkit.h:19]
UE4Editor-Persona.dll!FPersonaToolkit::`scalar deleting destructor'()
UE4Editor-AnimationBlueprintEditor.dll!FAnimationBlueprintEditor::~FAnimationBlueprintEditor() [d:\animphys\engine\source\editor\animationblueprinteditor\private\animationblueprinteditor.cpp:160]
UE4Editor-AnimationBlueprintEditor.dll!FAnimationBlueprintEditor::`scalar deleting destructor'()
UE4Editor-UnrealEd.dll!SStandaloneAssetEditorToolkitHost::~SStandaloneAssetEditorToolkitHost() [d:\animphys\engine\source\editor\unrealed\private\toolkits\sstandaloneasseteditortoolkithost.cpp:211]
UE4Editor-Slate.dll!SDockTab::~SDockTab()
UE4Editor-SlateCore.dll!FReply::~FReply()
UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent() [d:\animphys\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5518]
UE4Editor-Slate.dll!FSlateApplication::OnMouseUp() [d:\animphys\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5495]
UE4Editor-Core.dll!FWindowsApplication::ProcessDeferredMessage() [d:\animphys\engine\source\runtime\core\private\windows\windowsapplication.cpp:1704]
UE4Editor-Core.dll!FWindowsApplication::DeferMessage() [d:\animphys\engine\source\runtime\core\private\windows\windowsapplication.cpp:2127]
UE4Editor-Core.dll!FWindowsApplication::ProcessMessage() [d:\animphys\engine\source\runtime\core\private\windows\windowsapplication.cpp:867]
UE4Editor-Core.dll!FWindowsApplication::AppWndProc() [d:\animphys\engine\source\runtime\core\private\windows\windowsapplication.cpp:714]
USER32.dll!0x0000000077079BBD
USER32.dll!0x00000000770798C2
UE4Editor-Core.dll!FWindowsPlatformMisc::PumpMessages() [d:\animphys\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:980]
UE4Editor.exe!FEngineLoop::Tick() [d:\animphys\engine\source\runtime\launch\private\launchengineloop.cpp:3039]
UE4Editor.exe!GuardedMain() [d:\animphys\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor.exe!GuardedMainWrapper() [d:\animphys\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor.exe!WinMain() [d:\animphys\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32.dll!0x0000000076F559CD
ntdll.dll!0x000000007718A561
ntdll.dll!0x000000007718A561