Some company networks have a "Proxy server" that interferes with the ability for CALSoft 6 to activate/license the software. During the activation phase, you might receive a message that the computer cannot connect to http://tcal-apps.com/licenseServer/Activator.asmx but the computer is on-line (connected to the internet).
To solve this, you will need to ask your IT/IS department to allow you to bypass your Proxy Server to license the software.