A route named “x” is already in the route collection. Route names must be unique. Exception with ASP.NET MVC 3

Question

I\'m doing an ASP.NET MVC 3 web service and I keep getting this exception intermittently.

Stack trace:

Server Error in \'/\' Application.

A route n         


        

Answer 1

Deleting the DLLs alone didn't work for me (in VS2013), but deleting the entire 'bin' and 'obj' folders and then building the solution worked perfectly! Makes me wish I hadn't spent so long trying to fix it...