On a Control Point system (Dell R620, etc.) running GV Guardian where the system is configured with two NICs; one on the control LAN and the other with network access, the license script can fail if it binds to the wrong NIC.
Assuming the license key is valid, the way to fix this is to manually enter the IP Address of the NIC with internet access into the gvlicense.php file.
The gvlicense.php file is located at:
Edit (using VI, VIM, etc.) the line containing the following text:
$ip_address = $_SERVER[‘SERVER_ADDR’];
Change "$_SERVER[‘SERVER_ADDR’];" to the IP Address of the NIC with internet access.