Re Mathematica 10.1 and the entry
X = CountryData@"Countries";
When I enter the above command under Windows 7, it works well (240 obs).
But under Windows 8.1, it returns $Failed and persists in doing so when I re-enter. However, twice it did work (I kept exiting Mathematica, resetting it and trying again).
I'm doing this 25 April 2015 shortly after midnight Eastern Time.
Is there an explanation for what is going on? Thanks.
CountryData also fails for me on a Mac running MMA 10.1