Problem with Sims 4 Studio

Hello! I have a problems i start the sims 4 studio click animation or other is not working and show this error 
The Sims 4 Studio - Version 3.1.3.0

System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Ссылка на объект не указывает на экземпляр объекта.

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.ExecuteAddAnimation()

at S4Studio.ViewModels.GenericUserCommand.<>c__DisplayClass8_0.<.ctor>b__1(Object y)

at S4Studio.ViewModels.GenericUserCommand.Execute(Object parameter)

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.ExecuteAddPosePack()

at S4Studio.ViewModels.GenericUserCommand.<>c__DisplayClass8_0.<.ctor>b__1(Object y)

at S4Studio.ViewModels.GenericUserCommand.Execute(Object parameter)

at S4Studio.Shared.AnimationFeatureViewModel.Clone(IDBPFPackage package, String hash, IEnumerable`1 selected_prototypes)

at S4Studio.Shared.FeatureViewModel.<>c__DisplayClass28_0.<CreateItem>b__0()

at System.Threading.Tasks.Task.InnerInvoke()

at System.Threading.Tasks.Task.Execute()

--- End of inner exception stack trace ---

---> (Inner Exception #0) System.NullReferenceException: Ссылка на объект не указывает на экземпляр объекта.

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.ExecuteAddAnimation()

at S4Studio.ViewModels.GenericUserCommand.<>c__DisplayClass8_0.<.ctor>b__1(Object y)

at S4Studio.ViewModels.GenericUserCommand.Execute(Object parameter)

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.ExecuteAddPosePack()

at S4Studio.ViewModels.GenericUserCommand.<>c__DisplayClass8_0.<.ctor>b__1(Object y)

at S4Studio.ViewModels.GenericUserCommand.Execute(Object parameter)

at S4Studio.Shared.AnimationFeatureViewModel.Clone(IDBPFPackage package, String hash, IEnumerable`1 selected_prototypes)

at S4Studio.Shared.FeatureViewModel.<>c__DisplayClass28_0.<CreateItem>b__0()

at System.Threading.Tasks.Task.InnerInvoke()

at System.Threading.Tasks.Task.Execute()<---