i have an r4i tt and recently downloaded Yugioh wc over the nexus.The game works, but the problem is that the cheats don't.None of the work.I have the European and North American version and have tested both codes on both of them but nothing..the codes work for all my other games..except Pokemon white, which i have the same problem with.also, when i switch the cheat database from usrcheats to something else and try to go to the cheat menu, the ds just sort of freezes(though you can still hear the annoying music). Also, in Pokemon white, my pokemon don't get any experience.Thanks.