XeLaTex and TexMaker "cannot-use-pdftex"

The package required to compile using XeLaTeX was not installed on my linux ditribution. Solved with:

sudo apt-get install texlive-xetex

If you compile with XeLaTeX and have the Fontin fonts installed on your system it works fine after some modifications to the preamble and the very beginning of the file.

The main modifications consisted in deleting some obsolete options or packages, and the \fb switch-font command defined just after \begin{document}; re-defining it with fontspec and using Latin Modern rather than Computer Modern since the former exists in Opentype format.

Here is the beginning I used to compile:

%----------------------------------------------------------------------------------------
%   PACKAGES AND OTHER DOCUMENT CONFIGURATIONS
%----------------------------------------------------------------------------------------

\documentclass[a4paper,10pt]{article} % Default font size and paper size

\usepackage{fontspec} % For loading fonts
\defaultfontfeatures{Mapping=tex-text}
\setmainfont[SmallCapsFont = Fontin SmallCaps]{Fontin} % Main document font
\newfontface\fb{LMRoman10}

\usepackage{parskip, url} % Formatting packages%% xunicode,xltxtra are obsolete
\usepackage[dvipsnames]{xcolor} % Required for specifying custom colors usenames,
%% usenames is an obsolete option

\usepackage[big]{layaureo} % Margin formatting of the A4 page, an alternative to layaureo %can be \usepackage{fullpage}
% To reduce the height of the top margin uncomment: \addtolength{\voffset}{-1.3cm}

\usepackage{hyperref} % Required for adding links   and customizing them
\definecolor{linkcolour}{rgb}{0,0.2,0.6} % Link color
\hypersetup{colorlinks,breaklinks,urlcolor=linkcolour,linkcolor=linkcolour} % Set link colors throughout the document

\usepackage{titlesec} % Used to customize the \section command
\titleformat{\section}{\Large\scshape\raggedright}{}{0em}{}[\titlerule] % Text formatting of sections
\titlespacing{\section}{0pt}{3pt}{3pt} % Spacing around sections

\begin{document}

\pagestyle{empty} % Removes page numbering

%----------------------------------------------------------------------------------------
%   NAME AND CONTACT INFORMATION
%----------------------------------------------------------------------------------------