Upgrade via ispconfig_update.sh on Debian 6 After upgrading, cannot show the control panel at port 8080 Fatal error: require_once(): Failed opening required '../lib/config.inc.php' (include_path='.:/usr/share/php:/usr/share/pear') in /usr/local/ispconfig/interface/web/index.php on line 31 Tried to fix it by "chmod 750 /usr/local/ispconfig/interface/lib/config.inc.php" but not helping.