I have the same problem   1.Install CoinOPS 4 Lite 2.Copy roms CoinOPS 3 in 4 Lite   Result: Every time I click on a game the screen goes black and Then it just loads the rom selection menu again.   another test   1.Install CoinOPS 4 R3 2.Copy roms CoinOPS 3 in 4 R3   Result: Every time I click on a game the screen goes black and Then it just loads the rom selection menu again.   how I can fix the error? is by blockade?   Thanks   sorry for my English XD