Joomla Cron not finding setting files
Check your administrator/components/com_civicrm/civicrm/civicrm.config.php file. It should be only 12 lines long and look like the following:

&lt;?php
define('CIVICRM_SETTINGS_PATH', '&lt;www root&gt;/administrator/components/com_civicrm/civicrm.settings.php');
$error = @include_once( '&lt;www root&gt;/administrator/components/com_civicrm/civicrm.settings.php' );
if ( $error == false ) {
    echo "Could not load the settings file at: &lt;www root&gt;/administrator/components/com_civicrm/civicrm.settings.php
";
    exit( );
}

// Load class loader
require_once $civicrm_root . '/CRM/Core/ClassLoader.php';
CRM_Core_ClassLoader::singleton()-&gt;register();


The 3 paths to civicrm.settings.php within civicrm.config.php should all be absolute. Your PHP warnings show that /../..//default/ is in the path, which is incorrect for Joomla. I can't explain how it (or code that is generating it) ended up in your civicrm.config.php; this forum post might give a clue. If your civicrm.config.php is not as per the above, replace it with this, substituting  with the correct path.