In my Symfony2 project I\'m getting at development mode correct 404 Exception screen. But I\'m getting blank screen with HTTP status code 500 instead of 404 at production mo
In my case (symfony 2.3) I was getting a 200 status code, so the error pages didn't load. That's how I solved it:
https://groups.google.com/d/msg/Symfony2/zNWNmQIq3nk/lVs4uC7QMIcJ