[ぷりサガ！X] Installation Problem

Hello, long time without problems with eroges, until now, recently I downloaded a game called "ぷりサガ！X", I can run the installer perfectly, the game comes with it's own serial number and everything is fine until it "installs" the game, because it doesn't installs correctly, to be more precise, the "Installer" doesn't extract the files from Data.cab, and when i try to extract it directly it asks me for a password, one that I don't know and it's not provided with the game, here some screenshots:

















Can someone help me please with this?