Hello, everyone. Recently, I started using the 64-bit version of R from the command line in Mac OS X 10.6.4. Usually, I launch R with the command "R64 --save." I am using R version 2.11.0. When I install a new package, an X11 window loads, but it takes a short while to do this. However, the X11 window is blank and seems to serve no purpose. This happens each time that I install a new package. Is there a way to prevent this from happening or maybe a short explanation about what's happening? My guess is that R is trying to open a GUI interface so that I can select a server from which to download. I have posted the output to the command-line window at the following link: http://gist.github.com/448714 In the link, the X11 window loads about the time when "Loading Tcl/Tk interface ... done" appears. I have included a screencast so that you are able to see what I see: http://screencast.com/t/MjI4NDE2M Thanks in advance. -- John A. Ramey, M.S. Ph.D. Candidate Department of Statistics Baylor University http://www.ramhiser.com