Tex document not building in new computer (fontspec)

Question

I have a resume written in Tex that was working just fine. I had to change my HD drive due to a problem. I installed Miktex 2.9 and TexMaker again and configured the packages to download and install on the fly. I'm using Windows 7 x64

When I build the file now, I'm getting several errors, but the first one is:

! Undefined control sequence.
<recently read> \str_case:nnn
l.31 {Fontin}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

I used this template. I downloaded it again, and out of the box it also doesn't build.

This is the portion of my file which (I think) is generating the error:

%FONTS
\defaultfontfeatures{Mapping=tex-text}
%\setmainfont[SmallCapsFont = Fontin SmallCaps]{Fontin}
%%% modified for Karol Kozioł for ShareLaTeX use
\setmainfont[
SmallCapsFont = Fontin-SmallCaps,
BoldFont = Fontin-Bold,
ItalicFont = Fontin-Italic
]
{Fontin}
%%%

I've installed the Fonts in my computer and they're also in the root of the .tex file.

Edit: As asked, here is a sample file that gives the same error:

\documentclass{article}

\usepackage{fontspec}
\setmainfont{Arial}
\begin{document}

\section*{Introduction}
This is Introduction

\end{document}

And here is the .log of the minimal example (Pastebin)