R GUI: R data manager

Hi,
Perhaps a little bug in R64 GUI ?

Menu: Packages&Data-->DataManager

send the following message :
******************************************
Erreur dans help(dt[i], package = pkg[i], htmlhelp = TRUE) : 
  argument(s) inutilis?(s) (htmlhelp = TRUE)
De plus : Messages d'avis :
1: In data(package = .packages(all.available = TRUE)) :
  datasets have been moved from package 'base' to package 'datasets'
2: In data(package = .packages(all.available = TRUE)) :
  datasets have been moved from package 'stats' to package 'datasets'
********************************************
I use the following version (but I get the same message with the CRAN 2.11 release)
R version 2.11.0 Patched (2010-05-01 r51890)
on a Mac OS 10.6.3 macbookpro intel core2duo

Sincerely,

Fr?d?ric