How to add WEB API controller via Entity Framework

Question

I tried to add a WEB API controller via EF like this:

And then I got this error in my Visual Studio 2013 Ultimate.

Does anyone know why?

UPDATE:

This is the mid picture:

https://stackoverflow.com/questions/40522037/self-referential-loop-issue-mvc-web-api — BSharma, Nov 10 '16 at 13:28
Just for testing purposes...can you disable your antivirus and try again? — Hackerman, Nov 10 '16 at 13:29
http://stackoverflow.com/questions/23910162/scaffolding-controller-doesnt-work-with-visual-studio-2013-update-2 — Hackerman, Nov 10 '16 at 13:31
https://stackoverflow.com/questions/40522037/self-referential-loop-issue-mvc-web-api — BSharma, Nov 10 '16 at 13:31
I have VS Update 5 and the latest Entity Framework installed... Not helping. @Hackerman — Ferid Š. Sejdović, Nov 10 '16 at 13:36

score 1 · Accepted Answer · edited Mar 16 '17 at 14:59

1

Reinstall NuGet package as following:

Uninstall-Package EntityFramework

Install-Package EntityFramework

edited Mar 16 '17 at 14:59

hastrb

answered Nov 10 '16 at 13:24

Ross Miller

1 Answers1