afni.nimh.nih.gov

I am certainly no expert on this either, but you can see if you can install these two packages - shiny and circos inside R. Start R with just "R" on the command line, then install packages with "install.packages("shiny")" and then similarly for circos.

If this doesn't work inside R, then update your version of R to a recent version (OS specific instructions). Update the installed packages to the most recent versions.

update.packages(checkBuilt=TRUE, ask=FALSE)