WebApiContrib/WebAPIContrib — pull request #57 by ChrisMissal (2012-04-18 17:57:29+00:00)
Title: Added Extension to HttpConfiguration to use web.config custom errors

This extension addresses this perfectly:

http://lostechies.com/jimmybogard/2012/04/18/custom-errors-and-error-detail-policy-in-asp-net-web-api/