Btukfyl

I have classes for all the kinds of documents I usually write in Latex. I just migrated to a Mac in my new job, and find that none of my scripts work with MacTex 2018 (first time working with MacTex...).

The only error I get is:

Undefined control sequence. end{document}

Which means that there is something wrong with my .cls file, but that error makes it impossible to debug it.

The funny thing is all my files work perfectly in my Ubuntu machine under TexLive 2018. Why don't they work on a Mac?

Please have a look at this MWE of a simple letter.

This would be my .cls file:

ProvidesClass{DC_cover}[2018/08/31 cover class]

LoadClass{article}

NeedsTeXFormat{LaTeX2e}



DeclareOption{print}{def@cv@print{}}

DeclareOption*{%

    PassOptionsToClass{CurrentOption}{article}%

}

ProcessOptionsrelax



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



%%%%%%%%%%

% Colors %

%%%%%%%%%%



RequirePackage{xcolor}



definecolor{gray60}{HTML}{666666}% 60%

definecolor{gray40}{HTML}{999999}% 40%

definecolor{myblue}{HTML}{A589D9}

definecolor{skype}{HTML}{12A5F4}



ifdefined@cv@print

    colorlet{myblue}{gray60}

    colorlet{skype}{gray40}

else

    colorlet{myblue}{myblue}

    colorlet{skype}{skype}

fi

    colorlet{textcolor}{gray60}



usepackage{hyperref}

%hyperref options, no border and url colors

hypersetup{%

    pdfborder = {0 0 0},

    colorlinks=true,

    urlcolor=myblue

}



%%%%%%%%%

% Fonts %

%%%%%%%%%



usepackage[quiet]{fontspec}

defaultfontfeatures{Mapping=tex-text}

setmainfont[Mapping=tex-text, Color=textcolor]{Arial}



newfontfamilybodyfont{Arial Black}

newfontfamilythinfont{Lato Hairline}

newfontfamilyheadingfont{Impact}

renewcommand{bfseries}{headingfontcolor{textcolor}}



usepackage{unicode-math} %https://tex.stackexchange.com/questions/353136/compilation-error-option-unknown-unicode-math

setmathfont{XITS Math}



%%%%%%%%%%%

% Awesome %

%%%%%%%%%%%



%http://mirror.utexas.edu/ctan/fonts/fontawesome5/doc/fontawesome5.pdf

usepackage{fontawesome5}

%- If you want to use the latest, download fontawesome latest Desktop version from https://fontawesome.com/

%- Uncompress and change the names to the otf files so that they do not contain spaces

%- Copy the otf files to the following location, replacing current files

%sudo cp Font* /usr/share/texlive/texmf-dist/fonts/opentype/public/fontawesome5

%sudo texhash



%%%%%%%%%%%%%%%%

% From Details %

%%%%%%%%%%%%%%%%



newcommand{fromdetails}[5]{%

    begin{tabular}{@{}l@{}}

        today \[normalbaselineskip]

        textbf{#1}\

        #2\

        {Large textcolor{gray40}{faPhoneSquare}} #3\

        href{mailto:#4}{{large textcolor{gray40}{faEnvelope}} {small #4}}\

        href{skype:#5?call}{{Large textcolor{skype}{faSkype}} {small #5}}

    end{tabular}

}



%%%%%%%%%%%%%%

% To Details %

%%%%%%%%%%%%%%



newcommand{todetails}[2]{%

    begin{tabular}{@{}l@{}}

        textbf{#1}\

        #2

    end{tabular}

}



%%%%%%%%%%%%%

% Signature %

%%%%%%%%%%%%%



%newcommand{signature}[2]{%

%   begin{tabular}{@{}l@{}}

%       Yours sincerely,\[2normalbaselineskip]

%       includegraphics[width=5cm]{#2}\[normalbaselineskip]

%       #1

%   end{tabular}

%}



%%%%%%%%%%%%%%

%Geometry etc%

%%%%%%%%%%%%%%



usepackage{lipsum}

usepackage{graphicx}



setlength{parindent}{0pt}% No paragraph indentation

setlength{parskip}{.5baselineskip plus 0.1baselineskip minus 0.1baselineskip}



%%Page geometry

usepackage[left=2cm,top=2cm,right=2cm,bottom=2cm]{geometry}



%%%%%%%%%%

% Footer %

%%%%%%%%%%



usepackage{fancyhdr, lastpage}

pagestyle{fancy}

fancyhf{} % sets both header and footer to nothing



renewcommand{headrulewidth}{0pt}

renewcommand{footrulewidth}{0pt}



setlength{footskip}{1cm}



newcommand{footer}[2]{%

    fancyfoot[L]{{small textcolor{gray60}{faFingerprint} textbf{ #1}}hspace{0.375cm}-hspace{0.375cm}cover letter}



    fancyfoot[R]{

        href{mailto:#2}{textcolor{gray40}{{small faEnvelopeOpen}} {footnotesize #2}}hspace{3cm}

        {small textcolor{gray40}{faFileSignature} thepage of pageref{LastPage}}}

}

And this would be my .tex file:

documentclass[a4paper]{DC_cover}%[print] for print option

%letterpaper: US letter (215.9mm x 279.4mm) - default in this distribution

%a4paper: A4 paper (210.0mm x 297.0mm)



%%%%%BEGIN DOCUMENT!



begin{document}



%%PRINT FOOTER



footer

    {John Doe}

    {doe_doe@gmail.com}



%%FROM DETAILS



fromdetails

    {John Doe}

    {Some address\

        1 Abc St\\

        Singapore 000000}

    {+65 1234 5678}

    {doe_doe@gmail.com}

    {doe.doe}



bigskip



%%TO DETAILS



todetails

    {Jane Doe}

    {Doe Agency\

        10 Abc St\

        Singapore 000000}



bigskip



Dear Mrs. Doe,



bigskip



%%%%%%%%%%%%%%%%

%LETTER CONTENT%

%%%%%%%%%%%%%%%%



in response to the e-mail bla bla bla



bigskip



%%SIGNATURE



%signature

%{John Doe}

%{images/signature.pdf}



end{document}

Is there any obvious thing in the .cls file that does not work with MacTex? Sorry for its length but I am really at loss trying to debug it. Many thanks!