I just received a used copy of Virtua Fighter for US Sega Saturn. The game disc is in great condition, with very minimum wear on the disc surface. I tried to play this game on my JP Saturn using the converter cart, but the system would not even recognize the disc as a Saturn game disc. I'm not sure why this is happening, as I have played other US Saturn games on my JP Saturn without any problems. Could the VF game disc refuse to boot up on my Saturn for some other reason?