Can not initialize Seleno - System.TypeInitializationException #264

This is same issue thats mentioned in #231.
I am new to Seleno so I might have misunderstood something,

I am trying to get Seleno to work. Following the course Automated ASP.NET MVC Testing: End to End on Pluralsight by Jason Roberts.

But for some reason I cant get Seleno to work.
I created a solution with the ASP.Net MVC (.net 4.5.2). Works like it should.

I tried to make a little test but I always get the following error on initialising the BrowserHost.

System.TypeInitializationException : The type initializer for 'Tests.BrowserHost' threw an exception.
----> System.NullReferenceException : Object reference not set to an instance of an object.