[R-SIG-Mac] Package manager question

[David Kaplan]

Greetings,

My apologies if this is a very simple question.  I downloaded and 
installed a couple of packages today.  In the package manager in R for 
Mac (version 2.7.2), I find that when I try to load the package, I 
can't.  The load button never clicks on.  Why is that?  As an example, 
I'm trying to use Ryacas.  Thanks in advance,

David


-- 
=======================================================================
David Kaplan, Ph.D.
Professor
Department of Educational Psychology
University of Wisconsin - Madison
Educational Sciences, Room, 1061
1025 W. Johnson Street
Madison, WI 53706

email: dkaplan at education.wisc.edu
homepage:
http://www.education.wisc.edu/edpsych/default.aspx?content=kaplan.html
Phone: 608-262-0836