* installing *source* package 'CepReg' ...
** this is package 'CepReg' version '0.1.0'
** using staged installation
** R
** byte-compile and prepare package for lazy loading
Error in library(devtools) : there is no package called 'devtools'
Error: unable to load R code in package 'CepReg'
Execution halted
ERROR: lazy loading failed for package 'CepReg'
* removing 'd:/RCompile/CRANincoming/R-devel/lib/CepReg'