title: Postgres.app Could not start on port 5432
body: <p>I'm using <a href="http://postgresapp.com">http://postgresapp.com</a>. In the menubar it gives the error " Could not start on port 5432." Similarly if I try to start the server from the terminal, I get:</p>
  
  <pre><code>psql: could not connect to server: No such file or directory
      Is the server running locally and accepting
      connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
  </code></pre>
  
  <p>I also ran <code>pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start</code>
  and got the output <code>server starting</code> but still get the same errors when connecting to psql.</p>