do a syscheck
How to post a syscheck: Instructions here
what softmodguide did you follow? or have other things on your wii?
I am not familiar with ocarani stuff.. i know its some kind of cheat so we won't talk about it here, but does that modifiy your savedata? if so try to open a new gamesave and get to that specific stage without any code..guess it won't has a problem then
edit: maybe not the right forum section..