hi. I'm new to Nginx.
I'd like to make serve phpmyadmin on a non-standard url.
I'm on debian, and following this howto works great:
http://rubyist-journal.com/2010/02/28/howto-nginx-php5-mysql-phpmyadmin-ubuntu-shortest-setup/

but if I change it this way:

location /pma {
root /usr/share/phpmyadmin/;
index index.php index.html index.htm;
location ~ ^/(.+\.php)$ {
try_files $uri =404;
root /usr/share/phpmyadmin/;
fastcgi_pass backend;
fastcgi_param HTTPS $fastcgi_https;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$request_filename;
include /etc/nginx/fastcgi_params;
}
}

I just get 404.
2 questions:
* how to make it properly work?
* how to debug these config errors?

thanks a lot!
maxxer