This was updated on 14-June-2018, and should now be compatible with R v3.5 and higher. Some installation instructions have changed, so please see the tutorial.
Here you can download files for the related package.
GenotypeData.txt = example genotype file that can be used for testing.
simrel.txt = example genotype file for testing group relatedness function.
related_1.0.tar.gz = source code that can be downloaded and compiled on Windows and Linux machines
related_1.0.tgz = binary for Mac OS X
Detailed installation instructions are provided in the tutorial.