[dk-tug] Titlepage enviroment

Hej alle.

Jeg får en error at titlepage environment ikke kan findes når jeg forsøger
at compile nedstående eksempel ved hjælp af pdflatex ved brug af TexLive.
Findes der er et lignende environment som jeg kan bruge istedet?

\documentclass[article,oneside,a4paper,12pt,danish]{memoir}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{babel}
\usepackage{todonotes}
\usepackage{natbib}
\usepackage{translator}

\usepackage{natbib}
\citestyle{chicago} % Chicago Manual of Style citations
\bibliographystyle{dkchicago}

\begin{document}
\begin{titlepage}

\newcommand{\HRule}{\rule{\linewidth}{0.5mm}} % Defines a new command
for the horizontal lines, change thickness here

\center % Center everything on the page


\textsc{\LARGE Aarhus Universitet}\\[0.5cm] % Name of your university/college
\textsc{\Large Insitut for Datalogi}\\[1.5cm] % Major heading such as
course name


\HRule \\[0.4cm]
{ \huge \bfseries Eksperimentel Systemudvikling \\
    Projektrapport}\\[0.4cm] % Title of your document
\HRule \\[1.5cm]


\Large
Frederik B. Truelsen - 20116293 \\
Martin E.K. Rasmussen - 20112818 \\
Sandra B. Pedersen  - 20091463 \\
Thomas K. Jensen - 20116674 \\[1.5cm]

\textsc{\Large Vejleder}: Kristoffer Winge

{\large \today}\\[3cm] % Date, change the \today to a set date if you
want to be precise

\begin{minipage}{0.4\textwidth}
\begin{flushleft}
\includegraphics[scale=1.3]{images/au-logo.png}
\end{flushleft}
\end{minipage}
~
\begin{minipage}{0.4\textwidth}
\begin{flushright}
\includegraphics[scale=1.3]{images/au-logo.png}
\end{flushright}
\end{minipage}

\vfill % Fill the rest of the page with whitespace

\end{titlepage}
\end{document}


Hilsen Frederik.

-- 
Frederik B. Truelsen
Spobjergvej 54.
8220 Brabrand
60 17 98 46