thanks, i downloaded again the Amiga mini version, and i changed the game filename only, in this way. Now the game starts, but is is really slow...and with sound issues...it is very strange! It is the first time it happens...I tired it in a different USB key and the issue is still present. I tried the previous version (it worked fine) and now it has the same issue! I have this issue with Castlevania only... I really don't understand why.. :(