I am running Drupal Version 6.15 packaged in a pressflow installation with CCK 6.x-2.6. I am getting an error message inside all backend editors. For example if you select Administer>>Site Information you will see the following error message in both the Mission and Footer Message Box. I am trying to find out what is causing this error and would greatly appreciate any help as I am new to Drupal. I have attached an image as well.
Thank You Chules
Below is the error message
Fatal error: require_once() [function.require]: Failed opening required './sites/all/modules/cck/theme/theme.inc' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/pressflow/sites/all/modules/cck/content.module on line 177