404 on permanent links with nginx and woocommerce

Hi, i’m trying to setup a small shop using WP (spanish) + Woocommerce + nginx but i’m having some troubles setting permanentlinks. There are lots of related post, but none seems to solve my problem.

For Nginx configuration i’ve followed this

server {
	root /home/xxx/xxxx;
	index index.php index.html index.htm;

	# Make site accessible from http://localhost/
	server_name xxxx;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ /index.php?$args;
	}

	error_page 404 /404.html;

	# redirect server error pages to the static page /50x.html
	#
	error_page 500 502 503 504 /50x.html;

	# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
	#
	location ~ \.php$ {
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		# NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini

		# With php5-cgi alone:
		# fastcgi_pass 127.0.0.1:9000;
		# With php5-fpm:
		fastcgi_pass unix:/var/run/php5-fpm.sock;
		fastcgi_index index.php;
		include fastcgi_params;
	}
}

Permanent link is set to product-base (http://example.com/producto/sample-product/) and link is set ok for each products (x is link to http://example.com/producto/x/) but when click on it, 404 is raise.

Not sure why, but the X product is display ok in the url

http://example.com/?product=x

I’ve also try (without success) changing the try_file line to

try_files $uri $uri/ /index.php?q=$uri&$args;

Thanks in advance. Any other info needed just ask for it.

See you