Sorry for the late reply, but is my log:
MachineId:2D1F47564DB43ECEEF48AE9025E7C217
EpicAccountId:0c73e63da1ee419bbbec946b4e547091
Access violation - code c0000005 (first/second not available)
“”
UE4Editor_Engine!UFlexComponent::CalcBounds() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\engine\private\physicsengine\flexcomponent.cpp:539]
UE4Editor_Engine!USceneComponent::UpdateBounds() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\engine\private\components\scenecomponent.cpp:711]
UE4Editor_Engine!USceneComponent::UpdateComponentToWorldWithParent() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\engine\private\components\scenecomponent.cpp:359]
UE4Editor_Engine!USceneComponent::UpdateComponentToWorld() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\engine\private\components\scenecomponent.cpp:398]
UE4Editor_Engine!USceneComponent::AttachTo() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\engine\private\components\scenecomponent.cpp:1350]
UE4Editor_UnrealEd!FBlueprintThumbnailScene::InstanceComponents() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private humbnailhelpers.cpp:1184]
UE4Editor_UnrealEd!FBlueprintThumbnailScene::InstanceComponents() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private humbnailhelpers.cpp:1205]
UE4Editor_UnrealEd!FBlueprintThumbnailScene::GetPooledVisualizableComponents() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private humbnailhelpers.cpp:1324]
UE4Editor_UnrealEd!FClassActorThumbnailScene::SetObject() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private humbnailhelpers.cpp:975]
UE4Editor_UnrealEd!UBlueprintThumbnailRenderer::Draw() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private humbnailrendering\blueprintthumbnailrenderer.cpp:97]
UE4Editor_UnrealEd!ThumbnailTools::RenderThumbnail() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private\objecttools.cpp:3749]
UE4Editor_UnrealEd!FAssetThumbnailPool::Tick() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private\assetthumbnail.cpp:967]
UE4Editor_UnrealEd!FTickableEditorObject::TickObjects() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\public ickableeditorobject.h:15]
UE4Editor_UnrealEd!UEditorEngine::Tick() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private\editorengine.cpp:1117]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\editor\unrealed\private\unrealedengine.cpp:366]
UE4Editor!FEngineLoop::Tick() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\launch\private\launchengineloop.cpp:2434]
UE4Editor!GuardedMain() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [c:\unrealengine-4.9.2_nvidia_techs\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]