*Giggles* I wont, lie.. For a moment, I thought you were asking that seriously, like...
What would you do in real life, if you were in a black room :O. -Gives you a teddy bear-
I have had the same thing happen to me in the past,
and like good ol' Ouka said, it was because the map I was in I deleted, and or was deleted ^_^;
So all you must do is press...
Find: The Golden Feather, that is in between the star- and roaring lion
Click: The Feather, and look for "home" in the choice bar
Click: Go Home :D - If you have the map you are in set as home, press reset home!
~Memo <3