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

You need to have 'vanilla' session without any packages loaded in order to update those package -- it is a well-known (and still annoying) Windows shortcoming that you cannot update a package which currently had (object) code loaded. As Rcpp comes with a small dll ... you get bitten.