Warning: require_once(./includes/functions_user.php) [function.require-once]: failed to open stream: No such file or directory in /register.php on line 62

Fatal error: require_once() [function.require]: Failed opening required './includes/functions_user.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/software/public_html/register.php on line 62