web brick error


after installing Nginx with passenger-install-nginx-module, the webrick server has stopped working:

:~/code/projects/script$ ruby rails server => Booting WEBrick => Rails 3.0.3 application starting in development on => Call with -d to detach => Ctrl-C to shutdown server Exiting /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:267:in `initialize': No such file or directory - /home/paul/code/projects/script/tmp/pids/server.pid (Errno::ENOENT)   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:267:in `open'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:267:in `write_pid'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:203:in `start'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands/server.rb:65:in `start'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:30:in `block in <top (required)>'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'   from /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:27:in `<top (required)>'   from rails:6:in `require'   from rails:6:in `<main>'

I have 2 problems really - this one, to start server with port 3000, and Nginx, which will not look anywhere other than opt/nginx/html/index.html. I think perhaps the two problems are linked - an error in the routing or config files? I am just trying to use localhost for port 80 under nginx, and localhost under port 3000 for web brick.

Any ideas welcome - I will paste any other code as necessary.

Kind regards

2 extracts from gninx config file:

http {     passenger_root /home/paul/.rvm/gems/ruby-1.9.2-p0/gems/passenger-3.0.0;     #passenger_ruby /home/paul/.rvm/wrappers/ruby-1.9.2-p0/ruby;     passenger_ruby /home/paul/.rvm/bin/passenger_ruby;


    server {         listen 80;         server_name localhost;

        #charset koi8-r;

        #access_log logs/host.access.log main;

        location /home/paul/code/projects {             #root html;

       root /home/paul/code/projects/public; # <--- be sure to point to 'public'!         passenger_enabled on;

            index index.html index.htm;         }