headers already sent by

Hi, I have installed Basic Statistics but after trying to login I have received the following error
Warning: Cannot add header information - headers already sent by (output started at /var/www/html/tuning/statistics/include/connection.php:38) in /var/www/html/tuning/statistics/login.php on line 79
and in the configuration area
Warning: Cannot add header information - headers already sent by (output started at /var/www/html/tuning/statistics/include/connection.php:38) in /var/www/html/tuning/statistics/config.php on line 313

Please download it again or open connection.php and delete the space (line) after ?> line 38.