Hi,

Windows Vista includes additional security mechanisms (User Access Control)
whose defaults make it difficult to install or update R packages.
To avoid these problems you need to go to Computer-> Program Files
Right click on the R directory and select "properties". Now select the
security tab.
Give your user ( which is the use R whose priviledges R runs under) Full
Control to the R directory.
This should solve the install/update issues.

Keep up the good work.

Chris Albert

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