  We report an error found during independent review of the NuTauSim publicly
available code \url{https://github.com/harmscho/NuTauSim} that forms the basis
of this publication. The error in the code was in tracking the density of the
medium during particle propagation. After the first interaction, the code was
referencing the depth of penetration back to the surface of the Earth rather
than the location of the last interaction. The results were obtained using
densities that were systematically underestimated when the particle was
traversing the inner layers of the Earth by assigning the density of either ice
or bedrock, depending on the particle energy or ice thickness of the
simulation. This error was fixed and the repository updated on September 29,
2018.
