Не запускается Xamarin Studio(windows 8 64x). В чем дело?

Question

[Игорь Волков]

Логи из файла AppData\Local\XamarinStudio-6.0\Logs:
Выполняется запуск Xamarin Studio
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.Debugger
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.SourceEditor2
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.TextTemplating
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.DesignerSupport
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.Xml
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.AspNet
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.UnitTesting
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.RegexToolkit
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.Refactoring
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.CSharpBinding
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.PackageManagement
INFO [2017-07-15 17:10:56Z]: Add-in loaded: Xamarin.Ide.Insights
INFO [2017-07-15 17:10:56Z]: Add-in loaded: Xamarin.TestCloud
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.Debugger.Soft
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.Xamarin.Ide
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.MonoAndroid
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.VBBinding
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.FSharpBinding
INFO [2017-07-15 17:10:56Z]: Add-in loaded: Xamarin.Forms.Addin
INFO [2017-07-15 17:10:56Z]: Add-in loaded: MonoDevelop.VersionControl
FATAL ERROR [2017-07-15 17:10:56Z]: Не удалось запустить Xamarin Studio
System.TypeInitializationException: Инициализатор типа "MonoDevelop.Ide.ImageService" выдал исключение. ---> System.MissingMethodException: Метод не найден: "!!0[] System.Array.Empty()".
в Gtk.IconFactory..ctor()
в MonoDevelop.Ide.ImageService..cctor() в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\ImageService.cs:строка 49
--- Конец трассировки внутреннего стека исключений ---
в MonoDevelop.Ide.ImageService.Initialize()
в MonoDevelop.Ide.IdeStartup.Run(MonoDevelopOptions options) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\IdeStartup.cs:строка 209
FATAL ERROR [2017-07-15 17:10:56Z]: Xamarin Studio failed to start. Some of the assemblies required to run Xamarin Studio (for example gtk-sharp)may not be properly installed in the GAC.
System.MissingMethodException: Метод не найден: "!!0[] System.Array.Empty()".

Server stack trace:
в Gtk.Dialog..ctor()
в MonoDevelop.Ide.Gui.Dialogs.GtkAlertDialog..ctor(MessageDescription message) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide.Gui.Dialogs\GtkAlertDialog.cs:строка 50
в MonoDevelop.Components.Extensions.AlertDialog.RunDefault() в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Components.Extensions\AlertDialog.cs:строка 83
в MonoDevelop.Components.Extensions.PlatformDialog`1.Run() в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Components.Extensions\PlatformDialog.cs:строка 100
в MonoDevelop.Components.Extensions.AlertDialog.Run() в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Components.Extensions\AlertDialog.cs:строка 78
в MonoDevelop.Ide.MessageService.InternalMessageService.GenericAlert(Window parent, MessageDescription message) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\MessageService.cs:строка 541
в System.Runtime.Remoting.Messaging.Message.Dispatch(Object target)
в System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]:
в System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
в System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
в MonoDevelop.Ide.MessageService.InternalMessageService.GenericAlert(Window parent, MessageDescription message)
в MonoDevelop.Ide.MessageService.GenericAlert(Window parent, String icon, String primaryText, String secondaryText, Int32 defaultButton, CancellationToken cancellationToken, AlertButton[] buttons) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\MessageService.cs:строка 450
в MonoDevelop.Ide.MessageService.ShowFatalError(String primaryText, String secondaryText, Exception ex) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\MessageService.cs:строка 187
в MonoDevelop.Ide.IdeStartup.Run(MonoDevelopOptions options) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\IdeStartup.cs:строка 250
в MonoDevelop.Ide.IdeStartup.Main(String[] args, IdeCustomizer customizer) в C:\data\lanes\3510\0ccfcd52\source\monodevelop\main\src\core\MonoDevelop.Ide\MonoDevelop.Ide\IdeStartup.cs:строка 594
.