All system or error messages within the online application are presented in pop-up windows. As you progress through the application, you will be asked to enter required information or information in specified formats. If you do not respond to a required question, or if you do not enter your response in the appropriate format, the system will bring this to your attention via a system message, thus the reason why pop-up blocking tools can hinder the process. This includes using the CEEB code look-up link.
For instructions on how to disable a pop-up blocking tool, check your browser for directions. Keep in mind that your system could have more than one pop-up blocker enabled.