when tcltk is called and a C-c C-c is issued a message of "Illegal instruction" is issued and the R process is killed. To reproduce please do the following require(tcltk) C-c C-c It will say "Illegal instruction" I use a debian 2.4 kernel with R 2.0.1 tcltck version 2.0.1. I use tcltk to have gui for setwd, any other methods to graphically do this is also appreciated. Thanks so much for any solutions. Jean