If you are installing the CELF-IV and you do not have an Internet connection, you will see the following message. "Unable to communicate with server, Cannot establish a connection, Press Yes to retry or press No to display an alternative method" Select no".
There may be a firewall on your network that is blocking a connection from your network to our servers. To solve this issue unplug your computer from the network cable from your computer. A window will appear saying that a connection could not be established would you like to retry? Please click “No”. You will be directed to insert the Installation Diskette provided with the software. Select “No Floppy. At this time a screen will display asking you for an Authorization Number. You will then be directed to contact Tech Support at 800-627-7271. When you call please have the following information available.