• using R version 2.11.1 Patched (2010-07-29 r52657)
• using session charset: ISO8859-1
• checking for file 'RcmdrPlugin.TextMining/DESCRIPTION' ... OK
• checking extension type ... Package
• this is package 'RcmdrPlugin.TextMining' version '0.1-0'
• checking package dependencies ... ERROR
  Packages required and available but unsuitable version:
  Rgraphviz
  
  See the information on DESCRIPTION files in the chapter 'Creating R
  packages' of the 'Writing R Extensions' manual.