Dear R users, I have R 1.8.0. and, when I try to load the package "multcomp", I have an error message saying that this package was developed under R 1.8.1. So my question is "How to update R" ? Should I uninstall my version of R to install the new one or is there a simpler way to update it ? Than you for your answer. Sincerely, Renaud.