New Super Mario Bros Wii Problems....

Hi everybody..
i a few days ago i decided to make a backup of the NSMB, i knew i there was a 002 fix for it b/c i also made a backup of Call of duty 4 reflex. (But that worked perfectly with neogamma)...

i have a hard and soft mod, but for some reason, after a few minutes of gameplay, a messege comes saying, "an error has occured"....basically what a 002 error would say (but it doesnt say error#002).
plus the game doesnt even work with usb loader, THEN the blue screen pops up (error#002).
The anti error 002 fix channel also shows a blue screen.

Finally....i scrubbed it and removed the main.dol etc.....
but when i put the disc in it says that the system files r corrupted...b4 i even do anything!!!

i need help.....if it helps i have 3.2U on my wii (it says 4 but i downgraded it)

all my other games work (both copy nd legite...lke mario kart, COD 4 and 5, Star wars force unleashed)

 

info on this would be greatly apreciated!