Error [5]: Cannot talk to the license server on host "xxx.x.x.x". Server not running

The /etc/hosts file might not contain an entry for hostname and IP address.
Note: This message applies to UNIX environments only.
Ensure that these values are added to the /etc/hosts file. You can find the hostname by typing hosntame from a command prompt. To obtain the IP address, type /sbin/ipconfig from a command prompt.