The following error appears when launching interpreterQ :
Please pay attention if the error popup is exactly the same as the screenshot above. A very similar popup may appear with a different error text. Compare with following FAQ topic to ensure you are on the correct FAQ page :
This error message means that the teacher PC cannot connect to the ERS client service which is running on the Control PC.
Make sure that the Control PC is up and running, and that the ERS Client service is currently running on that PC. If that is the case, check the network settings of Control PC and teacher PC and ensure that both PCs are still connected on the same network.