Unlike the other Neo-Geo emulators, NeoRAGEx will *try* to load the game as long as the files are in xxx_xx.rom format, there is an S1 and a hacked P1 to make it work. Also, NRX will not run ecrypted sets (yours is most likely an encrypted ones since it's missing the S1.) In contrast, Kawaks, FBA, MAME and Nebula are very picky when it comers down to filenames and correct CRCs. If you want to try getting it to work in Kawaks Loader, you need the correct DAT file for it. Search the board and maybe you'll find a matching DAT.