I can not install the latest XML package V3.9-4. I mannually install it in RGui by typing:
install.packages(\"LOCALDIR/XML_3.6-0.tar.gz\", repos=NULL, type=
I fixed this for myself today, noting it here for prosperity.
On Unbuntu systems, you can fix this by loading libxml2-dev:
libxml2-dev
sudo apt-get install libxml2-dev
After I did that, install.packages("XML") ran without a hitch.
install.packages("XML")