XF 1.2 Issues with setting up SEO.

I've recently purchased and installed Xenforo, and now I'm attempting to setting up SEO support. I'm running an nginx server (version 1.4.1) on ubuntu 13.10.

I've followed the instructions, and here is my current vhost config.

location /var/www/cyrodiil.net/public_html/ {
        try_files $uri $uri/ /var/www/cyrodiil.net/public_html/index.php?$uri&$args;
        index index.php index.html;

    location /var/www/cyrodiil.net/public_html/internal_data/ {

    location /var/www/cyrodiil.net/public_html/library/ {
a little further down

# pass the PHP scripts to FastCGI server listening on
    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
    #    # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    #    # With php5-cgi alone:
    #    # With php5-fpm:
    #    fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
        try_files $uri =404;
I have it configured properly to listen to

However while the index page loads, when I click on any of the other pages, I get a 500 error.

Here is the last error log entry.

2014/01/31 20:35:32 [error] 18289#0: *27 rewrite or internal redirection cycle while internally redirecting to "/index.html", client:, server: cyrodiil.net, request: "GET /forums/main-forum.2/ HTTP/1.1", host: "cyrodiil.net", referrer: "http://cyrodiil.net/"

any help would be appreciated, thanks!
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