@zaach - if the backend is unreachable, no error is returned to the front end. The front end knows an error occurs, but since it has no message, it displays: 

![screen shot 2014-02-24 at 12 20 30](https://f.cloud.github.com/assets/848085/2245291/2099d3ce-9d4e-11e3-961c-1c04e46905ee.png)

So, really, what I am trying to do is say an empty error message should display "Service Unavailable."