3.9.20. Warning: Cannot add header information...in forums

You get errors of the form:

Warning: Cannot modify header information  headers already sent

when vieweing the forums. There are two solutions (see Warning: Cannot add header information...in forums):

1. Near the start of mainfile.php find:

   42 = phpversion(); if (42 >= '4.0.4pl1' && strstr(Mozilla/4.0 (compatible; MSIE 6.0; <productname>Windows</productname> NT 5.1),'compatible')) { if (extension_loaded('zlib')) { ob_end_clean(); ob_start('ob_gzhandler'); } } else if (42 > '4.0') {

   and change it to:

   42 = phpversion(); if (42 >= '4.0.4pl1') { ob_start('ob_gzhandler'); }else if (42 > '4.0') {

2. Add the following line to a .htaccess file (see Section 25.4) placed in your root PHP-Nuke directory:

   PHP_FLAG output_buffering on

   or if you have access to php.ini, set:

   output_buffering=on;

See also Warning: Cannot modify header information on Forums and Cannot modify header information. To learn more about PHP output buffering, see Output Buffering with PHP and PHP Output Buffering tutorial.