• using R version 2.11.1 Patched (2010-07-29 r52657)
• using session charset: ISO8859-1
• checking for file 'pathClass/DESCRIPTION' ... OK
• checking extension type ... Package
• this is package 'pathClass' version '0.5'
• checking package name space information ... OK
• checking package dependencies ... ERROR
  Packages required but not available:
  multicore
  
  See the information on DESCRIPTION files in the chapter 'Creating R
  packages' of the 'Writing R Extensions' manual.