Error light
If iPod shuffle has an error, the front status light will blink orange and green when you press any button. If you see this, try turning off iPod shuffle, waiting a few seconds, and then turning it back on. If you still see the front status light blink orange and green, it could indicate that you have no songs on your iPod shuffle to play. Use iTunes to add songs to iPod shuffle and make sure the songs you are adding are compatible.
If you still see a blinking orange and green light, use iTunes to Restore iPod shuffle, and then use iTunes to add songs. If you still see orange and green, your iPod shuffle may need service.