Hi all,
after updating my copy of R to 2.8.1, I tried to install Matrix and  
lme4  but I get the following error:

  WARNING: ignoring environment value of R_HOME
* Installing *source* package 'Matrix' ...
** libs
** arch - i386
/Library/Frameworks/R.framework/Resources/bin/INSTALL: line 1: make:  
command not found
ERROR: compilation failed for package 'Matrix'
** Removing '/Library/Frameworks/R.framework/Versions/2.8/Resources/ 
library/Matrix'

The downloaded packages are in
	/private/tmp/RtmpiifIVE/downloaded_packages

Can anybody please help me out?

thanks a lot,

Dr. Achaz von Hardenberg
------------------------------------------------------------------------ 
--------------------------------
Centro Studi Fauna Alpina - Alpine Wildlife Research Centre
Servizio Sanitario e della Ricerca Scientifica
Parco Nazionale Gran Paradiso, Degioz, 11, 11010-Valsavarenche (Ao),  
Italy


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