Hello - I need some help.

When a user logs in I get the following error. The login does complete but I can't figure out what is missing or why... The code is listed below after the error.

Thanks,
Tim

Warning: require_once(/home1/localtw2/public_html//includes/helper.php) [function.require-once]: failed to open stream: No such file or directory in /home1/localtw2/public_html/plugins/user/phpbb3_user.php on line 231

Fatal error: require_once() [function.require]: Failed opening required '/home1/localtw2/public_html//includes/helper.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home1/localtw2/public_html/plugins/user/phpbb3_user.php on line 231
----

$sql_ary = array(

'login_name' => $user_data,

(LINE 231) 'username' => $user_data,

'username_clean' => utf8_clean_string($user_data),

'user_email' => $user_data,

'user_email_hash' => crc32($user_data) . strlen($user_data),