macbroy30 is on 10.12 Sierra (already since 04-Mar-2017) -- discontinued support for 10.8 Mountain Lion;
\documentclass[12pt,a4paper,fleqn]{report}
\usepackage{lmodern}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{wasysym}
\usepackage{eurosym}
\usepackage[english]{babel}
\usepackage[only,bigsqcap]{stmaryrd}
\usepackage{textcomp}
\usepackage{latexsym}
\usepackage{graphicx}
\let\intorig=\int %iman.sty redefines \int
\usepackage{iman,extra,isar,proof}
\usepackage[nohyphen,strings]{underscore}
\usepackage{isabelle}
\usepackage{isabellesym}
\usepackage{railsetup}
\usepackage{supertabular}
\usepackage{style}
\usepackage{pdfsetup}
\hyphenation{Isabelle}
\hyphenation{Isar}
\isadroptag{theory}
\title{\includegraphics[scale=0.5]{isabelle_isar} \\[4ex] The Isabelle/Isar Reference Manual}
\author{\emph{Makarius Wenzel} \\[3ex]
With Contributions by
Clemens Ballarin,
Stefan Berghofer, \\
Jasmin Blanchette,
Timothy Bourke,
Lukas Bulwahn, \\
Amine Chaieb,
Lucas Dixon,
Florian Haftmann, \\
Brian Huffman,
Lars Hupel,
Gerwin Klein, \\
Alexander Krauss,
Ond\v{r}ej Kun\v{c}ar,
Andreas Lochbihler, \\
Tobias Nipkow,
Lars Noschinski,
David von Oheimb, \\
Larry Paulson,
Sebastian Skalberg, \\
Christian Sternagel,
Dmitriy Traytel
}
\makeindex
\chardef\charbackquote=`\`
\newcommand{\backquote}{\mbox{\tt\charbackquote}}
\begin{document}
\maketitle
\pagenumbering{roman}
\chapter*{Preface}
\input{Preface.tex}
\tableofcontents
\listoffigures
\clearfirst
\part{Basic Concepts}
\input{Synopsis.tex}
\input{Framework.tex}
\input{First_Order_Logic.tex}
\part{General Language Elements}
\input{Outer_Syntax.tex}
\input{Document_Preparation.tex}
\input{Spec.tex}
\input{Proof.tex}
\input{Proof_Script.tex}
\input{Inner_Syntax.tex}
\input{Generic.tex}
\part{Isabelle/HOL}\label{part:hol}
\input{HOL_Specific.tex}
\part{Appendix}
\appendix
\input{Quick_Reference.tex}
\let\int\intorig
\input{Symbols.tex}
\begingroup
\tocentry{\bibname}
\bibliographystyle{abbrv} \small\raggedright\frenchspacing
\bibliography{manual}
\endgroup
\tocentry{\indexname}
\printindex
\end{document}