XeLaTeX and BiBLaTeX won't play nice when using TeXworks on Windows XP [closed]

I've imported a tex file that works splendid on Mac OS X with TeXShop to TeXworks on a Windows XP machine (using the latest MiKTeX version). In it, I use the following commands `\usepackage[backend=biber]{biblatex}` and `\addbibresource{MyLibrary.bib}`.

However, when I run XeLaTeX I get the following error every time

Package biblatex Warning: Please (re)run Biber on the file

The most obvious cause here is a difference in version, either of Biber or of `biblatex`. However, we'll need an example to offer more guidance. – Joseph Wright Sep 15 '12 at 13:31