Error xml version=1.0 encoding=utf-16

Hello

I encounter the following error, when i open the program please help me fix this error!

<?xml version="1.0" encoding="utf-16"?>

<ErrorReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <UserId />

  <HardwareId>08FY1-SGVU4-UUVT3-DYJKR</HardwareId>

  <Message>Object reference not set to an instance of an object.</Message>

  <StackTrace> at void Articulate.Storyline.Storyboard.StoryBoard.a()

   at void Articulate.Storyline.Storyboard.StoryBoard.a(object A_0, SceneEventArgs A_1)

   at void Articulate.Design.SceneEventHandler.Invoke(object sender, SceneEventArgs e)

   at void Articulate.Design.ProjectFile.OnSceneAdded(SceneEventArgs e)

   at void Articulate.Design.ProjectFile.NotifySceneAdded(Scene scene)

   at void Articulate.Design.Project.NotifySceneAdded(Scene addedScene)

   at void Articulate.Design.Scenes.OnInsertComplete(int index, Scene value)

   at void Articulate.Storyline.StorylineScenes.OnInsertComplete(int index, Scene value)

   at void Articulate.Collections.Generic.ThreadSafeList&lt;T&gt;.Add(T item)

   at Scene Articulate.Design.Scenes.New()

   at void Articulate.Design.ProjectFile.InitializeNewProjectFile(IProject newProject)

   at bool Articulate.Design.ProjectFileBase&lt;TProject&gt;.Create(Nullable&lt;Guid&gt; projectGuid)

   at bool Articulate.Design.ProjectFile.Create(Nullable&lt;Guid&gt; projectGuid)

   at bool Articulate.Storyline.Forms.exMainForm.NewProject()

   at bool Articulate.Storyline.Forms.exMainForm.NewProject(Size size)

   at void Articulate.Storyline.Commands.NewCommand.OnExecute(object[] values)

   at async Task Articulate.Windows.Forms.CommandBase.a(object[] A_0)

   at void Articulate.TaskExtensions.ExecuteAndForceExceptionsToForeground(Task task, bool runAsync)

   at void Articulate.Windows.Forms.CommandBase.Execute(object[] values)

   at void Articulate.Storyline.Forms.exMainForm.a(object A_0, StartPageEventArgs A_1)

   at void Articulate.Windows.Forms.StartPage.OpenFile(string fileName, bool newfromfile)

   at void Articulate.Windows.Forms.StartPage.an()

   at void Articulate.Windows.Forms.StartPage+c.b(StartPageLinkLabelPanel A_0)

   at void Articulate.Windows.Forms.StartPageLinkLabelPanel.c()

   at void Articulate.Windows.Forms.StartPageLinkLabelPanel.OnMouseClick(MouseEventArgs e)

   at void System.Windows.Forms.Control.WmMouseUp(ref Message m, MouseButtons button, int clicks)

   at void System.Windows.Forms.Control.WndProc(ref Message m)

   at void System.Windows.Forms.ScrollableControl.WndProc(ref Message m)

   at void System.Windows.Forms.Control+ControlNativeWindow.OnMessage(ref Message m)

   at void System.Windows.Forms.Control+ControlNativeWindow.WndProc(ref Message m)

   at IntPtr System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam)</StackTrace>

</ErrorReport>