New Post: MVC Functions that return a File: OutputStream is not available when a custom TextWriter is used.

I see. I'm always using the Owin Startup Handler to register all my stuff so i never had that issue before.

http://www.asp.net/aspnet/overview/owin-and-katana/owin-startup-class-detection

This approach also resembles the way asp.net apps are composed in ASP.Net Core so its not a bad thing to master.