Can not create socketIO server

[Spo-oky]

Hi,

I'm trying to create a server with .Net 4.5 ad gives an error on creating the server:

SocketIOServer server = new SocketIOServer(new SocketIOServerOption(9001));

System.MissingMethodException: 'Method not found: 'Void EngineIOSharp.Server.EngineIOServerOption..ctor(UInt16, System.String, Boolean, UInt64, UInt64, UInt64, Boolean, Boolean, Boolean, Boolean, System.String, System.Collections.Generic.IDictionary2<System.String,System.String>, System.Action2<WebSocketSharp.Net.HttpListenerRequest,System.Action1<EngineIOSharp.Common.EngineIOException>>, System.Action2<WebSocketSharp.Net.WebSockets.WebSocketContext,System.Action1<EngineIOSharp.Common.EngineIOException>>, System.Object, System.Security.Cryptography.X509Certificates.X509Certificate2, System.Net.Security.RemoteCertificateValidationCallback)'.'
`

This is from the example and it's not possible to create the server, is there another way to resolve this?