Simon -

I appreciate your help very much. Unfortunately I did exactly what you  
said and got an error again :(

******snip******
 > install.packages("igraph",,"http://r.urbanek.info")
trying URL 'http://r.urbanek.info/bin/macosx/leopard/contrib/2.10/igraph_0.5.3.tgz'
Content type 'application/x-tar' length 3280864 bytes (3.1 Mb)
opened URL
==================================================
downloaded 3.1 Mb


The downloaded packages are in
	/var/folders/7J/7JpbFNySGACoH3teAShOLE+++TM/-Tmp-//RtmptZ63yS/ 
downloaded_packages

 > library("igraph")
Error in dyn.load(file, DLLpath = DLLpath, ...) :
   unable to load shared library '/Library/Frameworks/R.framework/ 
Resources/library/igraph/libs/x86_64/igraph.so':
   dlopen(/Library/Frameworks/R.framework/Resources/library/igraph/ 
libs/x86_64/igraph.so, 10): Symbol not found: ___gmpz_clear
   Referenced from: /Library/Frameworks/R.framework/Resources/library/ 
igraph/libs/x86_64/igraph.so
   Expected in: dynamic lookup

Error : .onLoad failed in 'loadNamespace' for 'igraph'
Error: package/namespace load failed for 'igraph'

*********

-Michael

On Nov 24, 2009, at 4:57 PM, Simon Urbanek wrote:

> install.packages("igraph",,"http://r.urbanek.info")


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