Try exiting your browser, waiting 30 seconds, then restarting your browser and launching PageBuilder again. This allows the browser to reset its internal state and cleanly restart. If it still doesn't work, reboot your machine.

If you still can't launch PageBuilder, your Internet service provider's network might be congested. At certain times of the day, traffic on the Internet can be very heavy, and you may have to wait a little longer for your ISP to connect to our servers. The Internet can sometimes experience bottlenecks and traffic jams, just as freeways do. If this is the case, try launching PageBuilder again at a later time.