Nginx – unicorn and nginx, went wrong

I try to deploy my app via capistrano. It was done, but when I start to nginx and show my site in the browser I see 'We're sorry, but something went wrong.'

It is bad. I use unicorn. See my configs https://gist.github.com/3904032
I try to start server via rails s -e prodiction and it's work!

I think that this error may be because I can't restart server

root@li272-194:~# /etc/init.d/nginx restart
Restarting nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
configuration file /etc/nginx/nginx.conf test is successful
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: still could not bind()
nginx.

any ideas?

nginx log

2012/10/17 02:57:41 [error] 3271#0: *1 could not find named location "@myapp", client: 91.192.62.77, server: 178.79.153.194, request: "GET / HTTP/1.1", host: "178.79.153.194"

2012/10/17 02:19:08 [crit] 2448#0: *8 connect() to unix:/srv/zarcon/shared/unicorn.sock failed (2: No such file or directory) while connecting to upstream, client: 91.192.62.77, server: zarkon, request:
"GET / HTTP/1.1", upstream: "http://unix:/srv/zarcon/shared/unicorn.sock:/", host: "178.79.153.194"