# Create Title Page with Hepthesis produces error

I'm trying to create a title page with hepthesis but run into problems. Could you hint me in the direction where I skrewed up?

MWE1:

\documentclass[oneside,a4paper,]{hepthesis}

\begin{document}
\author{QWER QWER}
\title{ABC acb}
\date{1.1.2000}

\begin{titlepage}
BlaBla
\end{titlepage}

\end{document}


procudes: ! LaTeX Error: There's no line here to end.

MWE2:

\documentclass[oneside,a4paper,]{hepthesis}

\begin{document}
\author{QWER QWER}
\title{ABC acb}
\date{1.1.2000}

\begin{titlepage}
\begin{minipage}{0.2\textwidth}
asdf
\end{minipage}
\end{titlepage}

\end{document}


produces the same with a lot of additional errors which migth go away once I takle the problem. Omitting the lines of author/title/date didn't help.

-

In hepthesis, there is no titlepage environment, but a \titlepage command, see section 6.5 in the class documentation.

The optional command is not really optional, because its absence will still cause the There's no line here to end, telling me that the class has not really been fully tested. Also, an input such as

\documentclass[oneside,a4paper,]{hepthesis}

\begin{document}
\author{QWER QWER}
\title{ABC acb}
\date{1.1.2000}

\titlepage[Some affiliation]{%
A dissertation submitted to the University of Somewhere\\
for the degree of Doctor of Philosophy
}

\end{document}


will produce the following typographically disputable result:

A sounder definition of \titlepage would be

\documentclass[oneside,a4paper,]{hepthesis}

\makeatletter
\renewcommand{\titlepage}[2][]{%
\par
\begingroup
\thispagestyle{empty}%
\ifx\@sftitles\@empty\else\sffamily\fi%
\centering
\vspace*{\frontmattertitleskip}%
\begin{doublespace}%
\Huge\textbf{\thetitle}\\
\end{doublespace}%
\vspace*{3cm}%
{\Large\theauthor\\[1ex]}
{#1\par}
\vspace*{8cm}%
{#2\\}
\endgroup
}
\makeatother

\begin{document}
\author{QWER QWER}
\title{ABC acb}
\date{1.1.2000}

\titlepage[Some affiliation]{%
A dissertation submitted to the University of Somewhere\\
for the degree of Doctor of Philosophy
}

\end{document}


This will work also without the optional argument.

-
Okey Thank you for your answer, I'll use the renewcommand as my titlepage environment now. Seems a bit hacky but this might work. –  magu_ Jul 18 '14 at 14:32