Hi-
Yes, you should update your version of R; I'm not sure why we link to that old one still, and I will update our instructions. This should be a modern enough version to use (3.5.3) on Macs:
[
cran.r-project.org]
(form the cran website, having 3.6.0 might require other installs to compile R libraries).
After updating your R, you should update your packages in the R, by running the following in the R environment:
update.packages(installed.packages(priority="NA"), checkBuilt=TRUE, ask=FALSE)
After that, you can then run the AFNI rPkgsInstall program to get the remaining brms package:
rPkgsInstall -pkgs ALL
--pt