LEGO Dimensions - Hang Up

Hi,

1) My kids encountered the WIi U hang up (freezed) when they are in the Simpsons world and tryto activate the keystone. Wii U just freezed/hang up.

a) I need to power down the Wii U - Restart the game in order to clear the hang up. They will encounter same hang up issue if they go to the Simpsons world and try to activate the keystone.

2) Wii U system - latest updates installed.

3) They played Jurassic World, Scooby Doo - no issues.

Please advise what I can do.

Thanks.