Hello:
If you are prompted for a manual activation please connect to us at www.autodesk.com/activationhelp or contact us at 1-800-551-1490 press 1 for English and press 1 again for StandAlone and we'll be glad to help you to activate the software manually.
To obtain a new network license file for the your server, connect to us at www.autodesk.com/activationhelp or contact us at our registration and activation line at 1-800-551-1490 and provide us the serial #s , the server name and it's MAC address. A new network license file will be emailed to you.