[R-SIG-Mac] Error loading grDevices.so

[Gene]

I just tried running R from the command line for the first time with  
my new setup and get this error in trying to load grDevices.so:

Error in dyn.load(x, as.logical(local), as.logical(now)) :
   unable to load shared library '/Library/Frameworks/R.framework/ 
Resources/library/grDevices/libs/ppc/grDevices.so':
dlopen(/Library/Frameworks/R.framework/Resources/library/grDevices/ 
libs/ppc/grDevices.so, 6): Symbol not found: ___eprintf
Referenced from: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
Expected in: /Library/Frameworks/R.framework/Resources/lib/libstdc++. 
6.dylib

I could live without quartz() or X11(), but when I get this error on  
library(stats), that really hurts.

Any suggestions?  Here is my system:

R.version.string =  "Version 2.3.1 (2006-06-01)"
R GUI = Version 1.16 (3198)
OS = 10.4.7
Computer = 2x3GHz Mac Pro