Indeed, all I had to do is install R version 3.0.1 Patched (2013-09-02 r63805), and all was well.

I'm puzled why, at the time I upgraded to 3.0.1, tcltk wasn't installed. But that's now water under the bridge, and I don't care much for either hydrology or pontology.

Thanks,
MK

On Sep 3, 2013, at 6:40 AM, Prof Brian Ripley <ripley@stats.ox.ac.uk> wrote:

> On 03/09/2013 11:21, Michael Kubovy wrote:
>> Many packages require tcltk.
>> 
>> I have installed http://cran.r-project.org/bin/macosx/tools/tcltk-8.5.5-x11.pkg and yet, when I try
> 
> That is the wrong version for R 3.0.1, so please remove it.  You may need to re-install R, as that ships with the correct tcltk.
> 
> -- 
> Brian D. Ripley,                  ripley@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> 
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac

______________________________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
for mail add:						for FedEx or UPS add: 
P.O.Box 400400					Gilmer Hall, Room 102
Charlottesville, VA 22904-4400	485 McCormick Road
USA							Charlottesville, VA 22903
		room	phone
Office:    B011	+1-434-982-4729
Lab:        B019	+1-434-982-4751
WWW:    http://www.people.virginia.edu/~mk9y/


	[[alternative HTML version deleted]]

