[R] tkrplot installation problems

[Abhijit Dasgupta]

Hello,

I'm running R 2.8.1 on Ubuntu Hardy. I'm trying to install tkrplot. 
Using r-cran-tkrplot from the repository, I'm getting the following error:
 > library(tkrplot)
Loading required package: tcltk
Loading Tcl/Tk interface ... done
Error in structure(.External("dotTcl", ..., PACKAGE = "tcltk"), class = 
"tclObj") :
  [tcl] version conflict for package "Tcl": have 8.5.0, need exactly 8.4.

Error in library(tkrplot) : .First.lib failed for 'tkrplot'

This tries to install tkrplot version 0.0.16
However, installing R2.8.1 from the repositories automatically installs 
tcl8.5. In fact, if I try and remove tcl8.5 using synaptic, it also 
removes R.

I also tried to install the package from source, both by using 
install.packages as well as downloading source (tkrplot 0.0.18). This 
fails to install.

Can someone please help. My ultimate objective is to use the 
TeachingDemos package.
 > sessionInfo()
R version 2.8.1 (2008-12-22)
i486-pc-linux-gnu

locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C

attached base packages:
[1] tcltk     stats     graphics  grDevices utils     datasets  methods 
[8] base    

Thanks.

Abhijit