[R-SIG-Mac] How can I use grasp

[Ken Nussear]

Hi,

I need to do some spatial habitat modeling in grasp (er) and I'm  
using the Mac OSX version of the R binary (1.14 build 2129)

I used the package installer to install the grasper package, but I  
get a tcltk error when I try to load it.

Do I need a tcltk version of R to run this, and If so where can I  
find this?

Thanks

Ken

PS Here is the error message given when loading grasper

Your version of R is up to date
Loading required package: mgcv
This is mgcv 1.3-13
Loading required package: MASS
Loading required package: tcltk
Loading Tcl/Tk interface ... Error in dyn.load(x, as.logical(local),  
as.logical(now)) :
	unable to load shared library '/Library/Frameworks/R.framework/ 
Resources/library/tcltk/libs/tcltk.so':
   dlopen(/Library/Frameworks/R.framework/Resources/library/tcltk/ 
libs/tcltk.so, 10): Library not loaded: /usr/local/lib/libtcl8.4.dylib
   Referenced from: /Library/Frameworks/R.framework/Resources/library/ 
tcltk/libs/tcltk.so
   Reason: image not found
Error: .onLoad failed in 'loadNamespace' for 'tcltk'
Error: package 'tcltk' could not be loaded
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