just to confirm that creating the file /usr/share/thumbnailers/raw.thumbnailer with the [Thumbnailer Entry] as above it works on an fresh install of Ubuntu 12.10 64 bits to display thumbnails of NEF files generated by a Nikon D-5100.
just to confirm that creating the file /usr/share/ thumbnailers/ raw.thumbnailer with the [Thumbnailer Entry] as above it works on an fresh install of Ubuntu 12.10 64 bits to display thumbnails of NEF files generated by a Nikon D-5100.