I am having a problem installing and updating packages. It doesn't happen with every package I try to install or update, but most of them. I get this warning message: Warning: unable to move temporary installation 'C:\Program Files\R\R-2.8.0\library\file5f906952\rpart' to '4xl@鏛 $2' and most of the files are not moved to the Library folder. It happens whether I try to install the package direction from CRAN or from a zip file on my computer. I've tried using different versions of R (2.8.0 and 2.7.2) and the same problem occurs. Any suggestions would be much appreciated. Thanks, Jeremy [[alternative HTML version deleted]]