I am new to ClrMamePro, so there is probably something very simple that I am missing. I am trying to get it to rename my Nintendo DS roms. I have an updated dat file and I have given it the correct directory where my roms are located. However, when I scan, all my roms are read as "unneeded files," and apparently I am "missing" every rom.

Is there something I'm doing wrong that might be causing this problem? Thanks!