I\'m not exactly sure what you mean, but... there is a bug where there is no lighting sometimes when you log in. If you wait a few minutes, the world will start to light up and you\'ll be able to see properly.
Other than that, maybe you fell through the world? Try typing /spawn in the chat bar (do this *after* running the Updater program located in your PS folder). That will take you to Hydlaa Plaza.