No, nothing. Once you have a map and a character it should be fine...Escape should have let you exit. Try tapping the letter X. If that doesn't work, try shutting down, unplugging your keyboard, then plugging it back in. Once you've done that, restart your computer. If the F9 key (debug menu hotkey) was pressed when you first hooked it up, that might be causing it to be pressed an infinite number of times. Most hardware will set whatever keys that are pressed/not pressed to be the default positions when they are turned on and loaded.