I finally got mine working after messing with it all day and it turns out the copy i had was not complete and that's why it wouldn't load for me.So i got a different rip of it and it works perfect now.
*Wiiflow R254(224) using 249 to load the game and both 224 and 249 have 57 as the base*
So if your having issues with getting the game to load but are using the settings that everyone says works then you need to check your iso file
When it is completed extracted/un rared ext.. and you right click it and go to properties it should say
4.37 GB (4,699,979,776 bytes)
If yours doesn't match that then that's why yours isn't working.
The original copy i got was only like 4,239,979,776 bytes or something very close(already deleted it so i can't get the exact #)
The rip was posted on a popular site for wii games so im sure there are a lot of people who got the bad copy.
*The bad copy has no been removed from the site it was on*
If you have any questions about anything i said please PM me.