gcn ikaruga doesn't work

i downloaded the game and burned it to a dvd. it boots on the wii but when i try to select a new game the game goes to the select difficulty screen and then goes back to the title screen. can anybody help me?

-what program did you use?-What brand dvd did you use?-It was a dvd- and not dvd+ right?-What speed did you use?Works fine, though I'm using a gamecube to run it.