Encontre esto en otro foro
it must be mentoined that if the internal memory is nearly full and the wad installer itself wants to install a vc game, there is no check if the game which is going to be installed has enough space left on the internal memory.
if thats not the case the internal memory will kick out of bounds with a pretty damn effect. you have to reset your console to get free memory space. simply erase some channels doesn't raise you counter of free blocks. it will always show 0 free blocks!!!
so be very very carefull - otherwise you have to initialize you wii console.
PD. Oye PaKyKo acaso no se puede simplemente borrar los canales para ganar espacio? o usando el desintalador de wads