你能更具体一点吗？有没有报错信息，如果有可以发个截图吗？

未处理的异常：
消息：
La invocación del constructor del tipo ‘HelixToolkit.Wpf.HelixViewport3D’ que coincident con las restricciones de enlace especificadas produjo una excepción。
StackTrace:
en System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
en System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlObjectskipperJourties, Boolean skipJournaledProperties, 对象根对象, XamlAccessLevel accessLevel, Uri baseUri)
en System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
zh System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)
zh System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties)
zh System.Windows.Application.DoStartup()
zh System.Windows.Application.<.ctor >b__1（对象未使用）
en System.Windows.Threading.ExceptionWrapper.InternalRealCall（委托回调，对象参数，Int32 numArgs）
en MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen（对象源，委托方法，对象参数，Int32 numArgs，委托catchHandler)
zh System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
zh System.Windows.Threading.DispatcherOperation.InvokeImpl()
en System.Threading.ExecutionContext.runTryCode(Object userData)
en System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
en System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback 回调, 对象状态, Boolean ignoreSyncCtx)
zh System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
zh System.Windows.Threading.DispatcherOperation.Invoke()
zh System.Windows.Threading.Dispatcher.ProcessQueue()
zh System.Windows。 Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
zh MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
zh MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
zh System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
en MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
en System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
en System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority 优先级, TimeSpan 超时, 委托方法, Object args, Int32 numArgs)
zh MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
zh MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
zh System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
zh System. Windows.Application.RunInternal(Window window)
en System.Windows.Application.Run()
en OpenCNCPilot.App.Main()
ToString():
System.Windows.Markup.XamlParseException: La invocación del constructor del tipo ‘HelixToolkit.Wpf. HelixViewport3D 符合特定产品的限制。—> System.MissingMethodException: Método no encontrado: ‘Void System.Windows.Input.CommandBinding..ctor(System.Windows.Input.ICommand, System.Windows.Input.ExecutedRoutedEventHandler)’。
zh_cn HelixToolkit.Wpf.HelixViewport3D..ctor()
— Fin del seguimiento de la pila de la excepción —
zh System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings 设置，Uri baseUri)
en System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
en System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
en System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)
zh System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties)
zh System.Windows.Application.DoStartup()
zh System.Windows.Application.<.ctor>b__1(Object unused)
zh System.Windows.Threading.ExceptionWrapper。 InternalRealCall(Delegate callback, Object args, Int32 numArgs)
en MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
en System.Windows.Threading.Dispatcher.WrappedInvoke(委托回调, Object args, Int32 numArgs, Delegate catchHandler)
zh System.Windows.Threading.DispatcherOperation.InvokeImpl()
zh System.Threading.ExecutionContext.runTryCode(Object userData)
zh System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup（TryCode 代码，CleanupCode backoutCode，对象 userData） zh System.Threading.ExecutionContext.Run
（ExecutionContext executionContext，ContextCallback 回调，对象状态，布尔值 ignoreSyncCtx）
ExecutionContext executionContext, ContextCallback callback, Object state)
en System.Windows.Threading.DispatcherOperation.Invoke()
en System.Windows.Threading.Dispatcher.ProcessQueue()
en System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
en MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
zh MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
zh System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
zh MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
en System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
en System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority 优先级, TimeSpan 超时, 委托方法, Object args, Int32 numArgs)
en MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
en MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
zh System.Windows.Threading.Dispatcher.PushFrameImpl（DispatcherFrame 框架）
zh System.Windows.Application.RunInternal（窗口窗口）
zh System.Windows.Application.Run()
zh OpenCNCPilot.App.Main()

您可能没有安装最新版本的 .NET 框架。尝试安装 4.7.1：https ://www.microsoft.com/net/download/dotnet-framework-runtime

谢谢，问题已解决（Y）