HOW TO GET IT TO WORK IN 60Hz MODE FOR PAL USERS
1. Start the game in 50Hz mode and go to settings
2. Choose the icon with a screen displaying a "D"
3. Turn that option OFF
4. Restart Wii and turn on 60Hz
5. Start the game and wait for a while, the black screen will disappear!
The black screen will be there for about 10-20 seconds, just be patient and it will work.