Ok, I re-installed the Rtools (now Rtools211 because I was in another computer with R version 2.10) , and the message now when I tried to install the package was
Warning: invalid package 'GWSR_1.0.tar.gz' Erro: ERROR: no packages specified Warning message: In install.packages("GWSR_1.0.tar.gz", repos = NULL, type = "source") : installation of package 'GWSR_1.0.tar.gz' had non-zero exit status Any Clue? Thanks a lot Cheers -- View this message in context: http://r.789695.n4.nabble.com/error-on-Windows-OS-tp2236758p2237341.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.