[Metsfanmax]

I'm trying to reseed a torrent I downloaded earlier but I don't know much about the process. I didn't really alter the files and it's basically the same as it was when I downloaded it, but when I run the checksum tool that came with the download it comes up with an error that says it couldn't do the checksum for two files that couldn't be opened:
summer
M

Does anyone know what this means? I suspected this meant some sort of hidden file or something but that doesn't seem to be the case.