afni.nimh.nih.gov

The probabilistic atlases were removed because they take up a lot of space, and most people do not seem to.use them. The atlases are defined in AFNI_atlas_spaces.niml if you did want to download the probabilistic maps (link provided below). The warnings from whereami are just warnings, so they could be ignored. I removed those particular warnings from whereami in the latest distribution.

[afni.nimh.nih.gov]