Professor Layton and the Miracle Mask is Buggy
Bad Spot Pass downloads cause game to stop receiving updates.
Level-5 came clean today on a bug that was recently discovered in its 3DS launch title Professor Layton and the Miracle Mask.
This latest entry in the Layton series, easily the most popular 3DS title at launch, has a feature called Layton Times, which is basically the game's implementation of Spot Pass, where the 3DS system receives periodic updates from Level-5. The bug surrounds the second and third such update, which were distributed respectively between 3/8 and 3/17 and 3/18 and 3/31. If you received either data pack, future notices would ceases.
The fix is simple. Go into the game's "Himitsu no Mode" area, select to stop receiving notices, and then select to start receiving notices again. You'll find more details at the game's official site.