Problems with Snatcher on Sega CD.

Okay, so I'm playing Snatcher on gens, and it working well, except that the saving doesn't work. For some reason, all the four saving slots are full, and when I overwrite them, close the porogram and open it again, the old saves are there but mine is missing.

What should I do? I'm pretty n00bish when it comes to computers, so if you have explain something, explain it like youd be talking to an idiot.

Thank you.