\documentclass[xcolor=dvipsnames]{beamer} % [utf8x] ?
\usepackage[utf8]{inputenc}
\usepackage{ifthen}
\usepackage{amssymb}
\usepackage{hyperref}
\usepackage{listings}
\usepackage{synttree} % zum zeichnen von Baeumen
\usepackage{rotating}
\usepackage[german]{babel}

\lstset{language=C++,numbers=left,label=DescriptiveLabel}

\DefineNamedColor{named}{Gray}          {cmyk}{0,0,0,0.50}
\DefineNamedColor{named}{StuveRed}      {rgb}{0.74,0.16,0.19}

%%%% BEAMER SETTINGS %%%%
%\usetheme{Copenhagen}
%\usetheme{Szeged}
\usetheme{Frankfurt}
%\usecolortheme{beaver}
%\usecolortheme{crane}
%\usecolortheme{beaver}
\usecolortheme[named=StuveRed]{structure}
\setbeamertemplate{headline}[Szeged]
\setbeamertemplate{footline}[default]

% no line for footnotes
\newcommand*{\footnotemarkcolor}{Gray}
\renewcommand\footnoterule{}
\makeatletter
\renewcommand*{\@makefnmark}{\hbox{\@textsuperscript{%
 \color{\footnotemarkcolor}\normalfont\@thefnmark}}}
\makeatother

% footer:

\defbeamertemplate*{footline}{infolines theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.475\paperwidth,ht=2.25ex,dp=1ex,center]{date in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.475\paperwidth,ht=2.25ex,dp=1ex,center]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.05\paperwidth,ht=2.25ex,dp=1ex,right]{date in head/foot}%
    \usebeamerfont{date in head/foot}
    \insertframenumber{} / \inserttotalframenumber\hspace*{1ex} 
  \end{beamercolorbox}%
  }% \hbox
  \vskip0pt%
}


%%%% METADATEN %%%%
\title[todo?]
    {Versammlung aller Studierenden\\
    {\small Meinungsbilder}}
\author{Studierendenvertretung \texttt{stuve.uni-erlangen.de}}
%%\institute{}
\date{Wintersemester 2012/13}

\newcommand{\trot}[1]{%
\begin{minipage}{0.3cm}%
\begin{rotate}{270}#1\end{rotate}%
\end{minipage}}

\begin{document}

\begin{frame}
    \titlepage
    \begin{center}
        \tiny{Last Update: \today}
    \end{center}
\end{frame}

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

\end{document}
