Try to install manually by this way:
Code:
apt-get install libapache2-mod-fcgid
a2enmod fcgid
/etc/init.d/apache2 restart
After installation edit ISPmanager configuration file /usr/local/ispmgr/etc/ispmgr.conf and add line
Code:
Option ForcePhpFCgid
Save config and restart ISPmanager by stop ispmgr process and open in web-browser again
Now you can choose FastCGI mode for WWW domains in the ISPmanager.