This error message means that you have not added your age modules to ASEBA-Network. Please open the "ASEBA_Network 2015 License Manager." In the middle of the box, there will be a list of the serial keys that you have installed. If this is blank, you will need to add your ASEBA-Network serial key, AS WELL AS the age group module serial key.
Please note, adding only the network serial key will give you this message. If you don't have an age group specific serial key, you will need to purchase it. ASEBA-Network will not work without one.