PHP Errors when Accessing Sqlbuddy

Question

As a bit of a side project, I've been following a guide on how to set up an Nginx web server from here: http://arstechnica.com/information-technology/2012/12/web-served-part-4-get-your-database-on/2/

Everything went fine until I installed Sqlbuddy. When I try and navigate to {server address}/sqlbuddy the page stays white, and this appears in nginx's error.log:

2013/12/19 01:03:38 [error] 1949#0: *1 FastCGI sent in stderr: "PHP message: PHP Warning:  include(/usr/share/nginx/html/sqlbuddy/includes/types.php): failed to open stream: No such file or directory in /usr/share/nginx/html/sqlbuddy/functions.php on line 28
PHP message: PHP Warning:  include(): Failed opening '/usr/share/nginx/html/sqlbuddy/includes/types.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /usr/share/nginx/html/sqlbuddy/functions.php on line 28
PHP message: PHP Warning:  include(/usr/share/nginx/html/sqlbuddy/includes/class/GetTextReader.php): failed to open stream: No such file or directory in /usr/share/nginx/html/sqlbuddy/functions.php on line 29
PHP message: PHP Warning:  include(): Failed opening '/usr/share/nginx/html/sqlbuddy/includes/class/GetTextReader.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /usr/share/nginx/html/sqlbuddy/functions.php on line 29
PHP message: PHP Warning:  include(/usr/share/nginx/html/sqlbuddy/includes/class/Sql.php): failed to open stream: No such file or directory in /usr/share/nginx/html/sqlbuddy/functions.php on line 34
PHP message: PHP Warning:  include(): Failed opening '/usr/share/nginx/html/sqlbuddy/includes/class/Sql.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /usr/share/nginx/html/sqlbuddy/functions.php on line 34
PHP message: PHP Fatal error:  Class 'GetTextReader' not found in /usr/share/nginx/html/sqlbuddy/functions.php on line 128" while reading response header from upstream, client: 192.168.0.122, server: localhost, request: "GET /sqlbuddy/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.soc:", host: "192.168.0.123"

My setup in /etc/nginx/sites-available/www:

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;

    root /usr/share/nginx/html;
    index index.html index.htm index.php;

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

    location / {
        try_files $uri $uri/ =404;
    }

    location ~ /sqlbuddy/.*\.php$ {
        try_files $uri =404;
        include fastcgi_params;
        fastcgi_pass php5-fpm-sock;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_intercept_errors on;                                     
}

    location ~ \.php$ {
        try_files $uri =404;
            include fastcgi_params;
            fastcgi_pass php5-fpm-sock;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_intercept_errors on;
    }

    location ~ /\. {access_log off; log_not_found off; deny all;}
    location ~ ~$ {access_log off; log_not_found off; deny all;}

    ...unrelated...
}

Steps I've taken:

• chmod 755'ed the entire /html directory and everything below it
• chown www-data:www-data /sqlbuddy'ed directory
• made sure my username was part of the www-data group
• uninstalled and re-installed sqlbuddy several times according to the instructions above
• moved all the files from /sqlbuddy/src to /sqlbuddy (note that it's still broken whether I move those files or not)
• Restarted php-fpm, nginx, and the server itself several times

Needless to say this is very perplexing. I admit many things like this are above my pay-grade so to speak (those are some hardcore errors), but I have absolutely no reason to believe that it shouldn't just work if I follow all instructions as written.