All, I've been using AQUAMACS Emacs to develop R code and run/test the code by clicking "eval line and step" from within the editor which opens R in a new tab and displays the output. This calls X11 when a display window opens up. This was all working fine weeks ago but now when I try to get a display window the whole screen grays out and the X11 window shows up on top of that. In order to get back to my workspace I have to exit X11 and then see an error message at the prompt saying: > Error: ignoring SIGPIPE signal > Error: X11 fatal IO error: please save work and shut down R Any advice on how to get X11 properly interfaced with Aquamacs and R again? Thanks much, ~Nico