Midnight club L.A.Remix disc loading error text

[Natie Savann]

I've tried to get Midnight club L.A.Remix rom from many different sources and checked their attributes，but PPSSPP always displays
"Game disc read error ISO Corrupt".
I haven't seen any sign of error until someday,a new ppsspp version was released.
The game is running perfectly but with a weird message displayed at the start.
I think It's a verifying error on ppsspp,could you check it out? Thanks.