Date index for Jul 2003

The following gets returned when I try and initiate a session:
 
Warning: Cannot send session cookie - headers already sent by (output started at /var/www/html/achievo-0.8.4/config.inc.php:148) in /var/www/html/achievo-0.8.4/atk/session/class.atksessionmanager.inc on line 14

Warning: Cannot send session cache limiter - headers already sent (output started at /var/www/html/achievo-0.8.4/config.inc.php:148) in /var/www/html/achievo-0.8.4/atk/session/class.atksessionmanager.inc on line 14

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/achievo-0.8.4/config.inc.php:148) in /var/www/html/achievo-0.8.4/atk/security/class.atksecuritymanager.inc on line 279

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/achievo-0.8.4/config.inc.php:148) in /var/www/html/achievo-0.8.4/atk/security/class.atksecuritymanager.inc on line 281
Login failed
 
Running:
RedHat v9
PHP 4.22
Apache 2.0
MySQL 3.23.54
 
I found this earlier post reply "Well for now, the best solution would be to set the 
allow_call_time_pass_reference configuration parameter to true. It seems 
the Achievo back-end is using stuff that's depreciated in PHP 4.1.x. We 
should ofcourse look in to that, and fix it for future releases...
 
The above mentioned parameter is set to On.  I also tried turning Off, but got more warning messages.  I'm not sure what else to try.  Any help is appreciated.
 
Regards,
Thomas