ScriptCS 0.17.01 Error Unexpected named argument

I tried to run my program using Visual Studio's Coderunner extension as well as from terminal with the scriptcs command.

My code is as follows:

using System;
namespace HelloWorldApplication {
class HelloWorld {
   static void Main(string[] args) {
      Console.WriteLine("hellowol");
   }
}
}

The error message reads:

Unexpected named argument: Users/jfitz/Projects/C#/Projtest/test.cs