Article contents aligned to left with svjour3 [closed]

Question

I have an issue with the svjour3 document class where all of the contents in my article are positioned to the left of the page instead of center when I use a onecolumn format. The result is that there a bunch of empty space on the right side of the document. The examples from the Springer LaTeX bundle show clearly that the contents of a onecolumn article should be positioned at the center of the page.

I have tried compiling the default template which comes with the bundle without modifying anything, but the result is exactly the same. At this point I am not sure what might be causing this issue.

I am using MacTex version 2.0 and the template itself can be found here: Springer LaTeX Template

Here is the code I am using:

\begin{filecontents*}{example.eps}

gsave
newpath
  20 20 moveto
  20 220 lineto
  220 220 lineto
  220 20 lineto
closepath
2 setlinewidth
gsave
  .4 setgray fill
grestore
stroke
grestore
\end{filecontents*}

\RequirePackage{fix-cm}

\documentclass[smallextended]{svjour3}
\smartqed
\usepackage{graphicx}

\begin{document}

\title{Insert your title here
}
\subtitle{Do you have a subtitle?\\ If so, write it here}

\author{First Author         \and
        Second Author %etc.
}


\institute{F. Author \at
              first address \\
              Tel.: +123-45-678910\\
              Fax: +123-45-678910\\
              \email{fauthor@example.com}           %  \\
           \and
           S. Author \at
              second address
}

\date{Received: date / Accepted: date}

\maketitle

\begin{abstract}
Insert your abstract here. Include keywords, PACS and mathematical
subject classification numbers as needed.
\keywords{First keyword \and Second keyword \and More}
\end{abstract}

\section{Introduction}
\label{intro}
Your text comes here.

\end{document}