Hi,
 
I encountered following error" Warning in install.packages("xlsx") :   'lib = "C:/Program Files/R/R-3.1.0/library"' is not writable". This is right after I installed R-3.1.0 on windows after previous R-2.15.2 which is still existing.
 
I checked the folder permission and it doesn't have read-only set. Did anybody experienced the same or have suggestions what to check or fix?
 
Thanks for the help,
 
Linda
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