Yumeiro Patissiere My Sweets Cooking (J) - Blank screen/hang problem

Just want to know, does anyone have problem playing this game?
I'm using a R4, and the game hangs after I've finished making the first recipe.
Any comments will be good. Thanks!
Or usually what does it mean if a game hangs or goes blank?

It's usually AP check or incompabilities with firmware.I see most R4 users use Wood R4 or YSMENU to help with playing their games lately.
You should try it.

Hmmm... I've just updated to Wood R4, but the games still hangs.
Any other suggestions?