Apologies for the self followup, but ... > Assuming you have Tcl/Tk installed on your system (if you do not, you need > to do this step), you need to set the TCL_LIBRARY environment variable to If you don't actually have Tcl/Tk installed, please see the site 'aspn.activestate.com'. Currently R1.6.x uses version 8.3.x of Tcl/Tk only. -J