ok soooo. why isnt it copying

I downloaded the wiibrew thing and it includes homebrew and the twilight hack. after putting the sd card and erasing my tp save data i go to copy the hack into the wii and it says "DATA WAS NOT COPIED" why is this happening?

Umm.. try reformatting... make sure its a FAT OR a FAT16 OR a FAT32 Sd card

Good luck, and have fun