.NET在生成服务引用时加载错误的程序集

I got the following error while trying to add service reference to a ASP.NET MVC 5 web application in Visual Studio 2012. I already have a reference to Microsoft.Owin.Security version 3.0.0.0 in my project. Should I also add for the 2.0.1.0 version?I got the following error while trying to add s