I am new to R. We have a binary package that was not maintained for about a year, and the original maintainer is not around anymore. The package used to work in R-1.5.1. I used the following steps to install this package in R-2.4 on WinXP: Started the GUI Went into the menu "Packages" and selected "Install packages from local zip files Clicked on the zip file with the package, and clicked "Open" R responded with the message "Updating HTML package descriptions". I can see the package files in the "library" subdirectory of R installation: cd "c:/program files/R/R-2.4.1/library" find . -name 'Rproj' -print ./file72ae2cd6/Rproj ./file72ae2cd6/Rproj/help/Rproj ./file72ae2cd6/Rproj/R/Rproj ./Rproj ./Rproj/help/Rproj ./Rproj/R/Rproj ( Please don't get confused by the UNIX-style paths, I am using cygwin shell on Windows ). However when I go to "Packages->Load package" menu, the Rproj package is not listed there. How would I find out what went wrong? Thanks, Vlad