I am running R on Windows, not as an administrator. When I install a package, the following command doesn\'t work:
> install.packages(\"zoo\")
Installing
I was looking into this because R was having issues installing into the default location and was instead just putting the packages into the temp folder. It turned out to be the latest update for Mcaffee Endpoint Security which apparently has issues with R. You can disable the threat protection while you install the packages and it will work properly.