Emulator Problem: MAME captain commando doesnt work

Please some help, i have the neo.emu on my android Galaxy Note 3, it works perfect with mame rom games, i have samurai showdown 4 working fine, but captain commando always, when i download it don't works and is very small file in all the sites where i downloaded, please if some one can help me with this issue o given to me a rom file who works, i will be very thankful.

im not familiar with android emulation. but if "neo.emu" is the name of the emulator. Than the problem would be your trying to run a 'cps1'(capcom play system 1) game 'captain comando' on a 'neogeo' emulator... theres probably nothing wrong with your commando rom, it is very small in size compaired to a lot of neogeo roms.