(backup/restore) Amportal not working after a partial restore

i ve installed a fresh system 64b - FreePBX 2.11, Linux 6.5 Asterisk 11 centos 6.5-freepbx.2.11 asterisk 11
and did a partial restore (/etc/asterisk and cdr)
and after the restore i get

amportal stop
Fetching FreePBX settings with gen_amp_conf.php…
PHP Fatal error: require_once(): Failed opening required ‘/var/www/freepbx/admin/libraries/modulelist.class.php’ (include_path=’.:/usr/share/pear:/usr/share/php’) in /var/www/html/admin/functions.inc.php on line 177
any ideas?
thank you for your help

just a note to add that the backup was on a 32bit server to a 64bit server…

i have never successfully restored a 32 bit system onto a 64 bit system. believe me i have made that mistake numerous times. specifically, if you load a 64 bit version of freepbx and try to restore a backup of a 32 bit verison it will seem to complete but it won’t run. i never spent a lot of time trying to figure out why i just loaded the 32 bit version and restored to it.