On Xubuntu 16.04LTS amd64, I cannot install afpfs-ng. This is a HUGE problem for me since my school uses macs and an afp file server, and I only have a PC running Linux and I need a file for the summer. When I try through the software center (both i386 AND amd64), it simply does not work. The install button literally does nothing. Through the command line (sudo apt-get install afpfs-ng) I get that the package has no installation candidate.
Try to download the tar.gz file direct from SourceForge page: https://sourceforge.net/projects/afpfs-ng/
tar jxf afpfs-ng-0.8.1.tar.bz2