Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout

Question

A Rails 3.2.0 app, working fine with Thin web server, both locally and on Heroku cedar stack.

After:

$ git branch work
$ git checkout work
$ rails se         


        

Answer 1

I ran into a similar issue after getting back to the office from vacation. I run my server on the local IP as:

rails s thin -b 

The problem was that my IP had changed, I just needed to use the new one.