is what i got ticking the particle mode:
Access violation - code c0000005 (first/second not available)
“”
UE4Editor_Engine!FFlexContainerInstance::FFlexContainerInstance() [m:\ue492\engine\source\runtime\engine\private\physicsengine\flexcontainerinstance.cpp:544]
UE4Editor_Engine!FPhysScene::GetFlexContainer() [m:\ue492\engine\source\runtime\engine\private\physicsengine\physscene.cpp:1371]
UE4Editor_Engine!UFlexComponent::OnRegister() [m:\ue492\engine\source\runtime\engine\private\physicsengine\flexcomponent.cpp:80]
UE4Editor_Engine!UActorComponent::ExecuteRegisterEvents() [m:\ue492\engine\source\runtime\engine\private\components\actorcomponent.cpp:1046]
UE4Editor_Engine!FComponentReregisterContextBase::ReRegister() [m:\ue492\engine\source\runtime\engine\public\componentreregistercontext.h:67]
UE4Editor_Engine!UActorComponent::ConsolidatedPostEditChange() [m:\ue492\engine\source\runtime\engine\private\components\actorcomponent.cpp:554]
UE4Editor_Engine!UPrimitiveComponent::PostEditChangeProperty() [m:\ue492\engine\source\runtime\engine\private\components\primitivecomponent.cpp:629]
UE4Editor_Engine!UFlexComponent::PostEditChangeProperty() [m:\ue492\engine\source\runtime\engine\private\physicsengine\flexcomponent.cpp:1109]
UE4Editor_CoreUObject!UObject::PostEditChangeChainProperty() [m:\ue492\engine\source\runtime\coreuobject\private\uobject\obj.cpp:374]
UE4Editor_Engine!UActorComponent::PostEditChangeChainProperty() [m:\ue492\engine\source\runtime\engine\private\components\actorcomponent.cpp:595]
UE4Editor_Engine!UPrimitiveComponent::PostEditChangeChainProperty() [m:\ue492\engine\source\runtime\engine\private\components\primitivecomponent.cpp:726]
UE4Editor_PropertyEditor!FPropertyNode::NotifyPostChange() [m:\ue492\engine\source\editor\propertyeditor\private\propertynode.cpp:1979]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [m:\ue492\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:446]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [m:\ue492\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:297]
UE4Editor_PropertyEditor!FPropertyHandleBool::SetValue() [m:\ue492\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:2368]
UE4Editor_PropertyEditor!SPropertyEditorBool::OnCheckStateChanged() [m:\ue492\engine\source\editor\propertyeditor\private\userinterface\propertyeditor\spropertyeditorbool.cpp:82]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,TTypeWrapper<void> __cdecl(enum ECheckBoxState)>::Execute() [m:\ue492\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:282]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,void __cdecl(enum ECheckBoxState)>::ExecuteIfSafe() [m:\ue492\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:388]
UE4Editor_Slate!SCheckBox::OnMouseButtonUp() [m:\ue492\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:184]
UE4Editor_Slate!<lambda_df946b2745ea2bbab398d4acc9cc3d04>::operator()() [m:\ue492\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4273]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_df946b2745ea2bbab398d4acc9cc3d04> >() [m:\ue492\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:214]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [m:\ue492\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4276]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [m:\ue492\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4660]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [m:\ue492\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4638]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [m:\ue492\engine\source\runtime\core\private\windows\windowsapplication.cpp:1403]
UE4Editor_Core!FWindowsApplication::DeferMessage() [m:\ue492\engine\source\runtime\core\private\windows\windowsapplication.cpp:1708]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [m:\ue492\engine\source\runtime\core\private\windows\windowsapplication.cpp:706]
UE4Editor_Core!FWindowsApplication::AppWndProc() [m:\ue492\engine\source\runtime\core\private\windows\windowsapplication.cpp:628]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [m:\ue492\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:884]
UE4Editor!FEngineLoop::Tick() [m:\ue492\engine\source\runtime\launch\private\launchengineloop.cpp:2398]
UE4Editor!GuardedMain() [m:\ue492\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [m:\ue492\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [m:\ue492\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]