Web Designer does not start after updating to 9.1.3 (4375909)

2024-05-27 18:05:43.1220 ERROR (VI.FormBase.ExceptionMgr  ) : Exception has been thrown by the target of an invocation. System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.

   at VI.WebDesigner.Editor.Model.WebDesignerPlugin.DockableWindowFactory.BuildDockable(Guid guid, String controlname, Int32 tabIndex, String groupname, String text)
   at VI.WebDesigner.Editor.Model.WebDesignerPlugin.DockableWindowFactory.InitDockControls()
   at VI.WebDesigner.Editor.Model.WebDesignerPlugin.WebDesignerPluginInfo..ctor(EditorManager manager, EditorSettings settings, IEditorInfo info, MainForm form)
   at VI.WebDesigner.Editor.Model.WebDesignerPlugin.WebDesignerPlugin..ctor(IEditorInfo info, EditorManager manager, EditorSettings settings, MainForm form)
   at VI.WebDesigner.Editor.Model.WebDesignerPlugin.WebDesignerPlugin..ctor()
   --- End of inner exception stack trace ---
   at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
   at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(Type type)
   at VI.WebDesigner.Editor.Model.PlugInManager.LoadPlugIns()    at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
   at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(Type type)
   at VI.WebDesigner.Editor.Model.PlugInManager.LoadPlugIns()
2024-05-27 18:05:43.2326 ERROR (VI.FormBase.ExceptionMgr  ) : Object reference not set to an instance of an object. System.NullReferenceException: Object reference not set to an instance of an object.
   at VI.WebDesigner.Editor.MainForm.InitControlsFromPlugins()
   at VI.WebDesigner.Editor.MainForm..ctor(Type plugin)
   at VI.WebDesigner.Editor.Program.Main()    at VI.WebDesigner.Editor.MainForm.InitControlsFromPlugins()
   at VI.WebDesigner.Editor.MainForm..ctor(Type plugin)
   at VI.WebDesigner.Editor.Program.Main()