> It is strange because I am unable to find a package named etoolbox in ctan.
Wilfred has already given the link to the package on CTAN, and as he said it is part of TeX Live; in the collection latexextra, to be precise. What's strange is how you managed to install polyglossia without installing etoolbox, as the former lists the latter as an explicit dependency. Arthur -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex