R CRAN, install library Rcpp fails after R3.2 upgrade

Question

I upgraded from R-3.1 to R-3.2. OK ( Standard upgrade)

But this upgrade seems to have lost all the installed packages ( ggplot2, quantmod, Rcpp among dozens and doze

Answer 1

I first tried installing from a cleaned envionment. Then I tried, after closing R-Studio, manually moving the Rcpp from the temp directory, but files were missing from this install's temp directory. I was finally able to do complete the manual move after downloading the package binary zipfile manually from https://cran.r-project.org/web/packages/Rcpp/index.html which had all of the subfiles, instead of using the temp location generated by install.packages("Rcpp"), or the RStudio environment GUI.