I've got the 4mb action replay cartridge, but haven't used it in YEARS. I went to put in radiant silvergun for the first time since getting it a month ago, and the system wouldn't let me play it. I put in my capcom classics disc, and again, nada. any ideas why the cartridge might've died? is there a battery inside that I need to change? I was also thinking since it's an unlicensed (I think) product, maybe I just need to keep trying it till it works. I seem to remember that being the case before when I was using it. thanks!