@mitu I transferred the file but the error is still here, then i moved it to the BIOS folder and the error message didn't appear again. But the games don't run, they are stuck to the boot screen (hand with the blue disk). Thanks for your time !! I will change my roms with .lha or i will use amiberry.
Ok, i tested with .lha and everything is working fine. Maybe the first roms wasn't so good.