I installed the two most recent GPFCE's side by side and correctly set up /mnt/sd/roms/nes. The older release lists the rom images in the selector while the most recent release does not. What gives?
Firstly, check the config file to see what folder it looks at, and what file extension it is looking for. I made the mistake of loading it once with UNZIPED roms, and the whole time it was looking for .zip extensions.