* installing *source* package ‘HierO’ ...
** package ‘HierO’ successfully unpacked and MD5 sums checked
** using staged installation
** R
** byte-compile and prepare package for lazy loading
Warning in tclRequire("BWidget") : Tcl package 'BWidget' not found
Error in structure(.External(.C_dotTclObjv, objv), class = "tclObj") : 
  [tcl] invalid command name "ComboBox".

Error: unable to load R code in package ‘HierO’
Execution halted
ERROR: lazy loading failed for package ‘HierO’
* removing ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.1/HierO.Rcheck/HierO’