From: "pas d." Date: 2011-02-28T03:38:58+09:00 Subject: trouble to install rsruby on windows XP Hello I am trying to install rsruby on a windows XP machine I use the following command gem install rsruby --with-R-dir=c:/Program Files/R/R-2.11.1/Bin I got the message: invalid option : --with-R-dir=c:/Program is there someon who could help thanks a lot -- Posted via http://www.ruby-forum.com/.