I have a working very stable ispconfig3 v ISPConfig-220.127.116.11p4 on Centos6 I have built a new Centos 7 server and done all the steps of the perfect verver 7.3 document 1) except ran into trouble with following steps: 1- Install current version. 2- Overwrite the dbispconfig database with old data copied from Centos 6 server. That did not work dbispconfig database became corrupt. [Fri Jun 09 15:29:11.144260 2017] [fcgid:warn] [pid 1427] [client 18.104.22.168:35387] mod_fcgid: stderr: PHP Warning: require_once(/usr/local/ispconfig/server/lib/config.inc.php): failed to open stream: Permission denied in /var/www/ispconfig/index.php on line 31[Fri Jun 09 15:29:11.144298 2017] [fcgid:warn] [pid 1427] [client 22.214.171.124:35387] mod_fcgid: stderr: PHP Fatal error: require_once(): Failed opening required '/usr/local/ispconfig/server/lib/config.inc.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/ispconfig/index.php on line 31 I want to know the correct steps to get up and running with my current dbispconfig database on the new host. Perhaps: 1- install ISPConfig-126.96.36.199p4.tar.gz clean 2-overwrite my dbispconfig db 3-Upgrade in place to current version. What do you think?