Notices are very, very minor problems. The "Warning: Cannot modify header information " is showing because you have the notices appearing on the browser before Drupal can send the HTTP header.
On these problems I usually start by switching Drupal back to using the Garland theme (install Drush and use vset theme_default garland). If the problem continues after that then start disabling modules, starting with custom ones.
Jamie Holly http://www.intoxination.net http://www.hollyit.net
On 8/10/2010 8:17 AM, Luc wrote:
Good morning list,
In addition to my problem, i've managed to enable the error reporting and now php sends the following errors. Unfortunately i'm not that familiar with php so i was hoping if somebody could point me into the right direction on what's going on and how to fix it:
Notice: Trying to get property of non-object in /public_html/projects/drupal/includes/common.inc on line 906
Notice: Trying to get property of non-object in /public_html/projects/drupal/includes/common.inc on line 1811
Notice: Trying to get property of non-object in /public_html/projects/drupal/includes/common.inc on line 1811
Warning: Cannot modify header information - headers already sent by (output started at /public_html/projects/drupal/includes/common.inc:906) in /public_html/projects/drupal/includes/bootstrap.inc on line 709
Warning: Cannot modify header information - headers already sent by (output started at /public_html/projects/drupal/includes/common.inc:906) in /public_html/projects/drupal/includes/bootstrap.inc on line 710
Warning: Cannot modify header information - headers already sent by (output started at /public_html/projects/drupal/includes/common.inc:906) in /public_html/projects/drupal/includes/bootstrap.inc on line 711
Warning: Cannot modify header information - headers already sent by (output started at /public_html/projects/drupal/includes/common.inc:906) in /public_html/projects/drupal/includes/bootstrap.inc on line 712
Notice: Undefined offset: 7 in /public_html/projects/drupal/modules/drupal_tweaks/drupal_tweaks.inc on line 242