Hacking USB loader: install new game does not always work!

[erolz]

Hi,

ive got a PAL DVD-R Mario Galaxy, wich i can play with the gamma loader.
but when i start the USB loader and choose "install game", the loader says "no wii disc inside" (or something like that)
ive got ciosrev10 installed.
wbfs manager gives me an error "this is not a wii iso"

Mario Galaxy PAL on Sony DVD-R wont copy with the USB loader : "no wii disc error"
Order Up PAL on Sony DVD-R does work!
Zack & Wiki on Maxell DVD-R wont copy with the USB loader : "no wii disc error"

how can this be?
im i the only one with this problem?

 

[computerboy]

Is the game patched by any chance. By patched I mean on the very first backup loader you needed to patch the ISOs so maybe that's the problem

 

[erolz]

..damn... i think that's the case...
let me guess..theres no way to unpatch a game?

 

[computerboy]

No there isn't. Anyway you should have the original no?

Actually there is look here: http://gbatemp.net/index.php?showtopic=148794