Regarding Bloody Rorar 3, here are my tests:
Using the dump from here: https://archive.org/download/Namco2x6Games/bldyr3b/ and the dongle from here https://archive.org/download/system2x6/Namco System 2X6/NM00002 Bloody Roar 3/ the games works fine.
Testing the dump from here https://archive.org/download/system2x6/Namco System 2X6/ in iso format, I noticed that the image is seems to be damaged or something because I am not able to mount it on a virtual drive and the emulator shows this error:
If I convert the "damaged" .iso to chd, I get the "setup cd location file error" message.