TeX capacity exceeded, sorry [input stack size=5000]. even for a small text

Question

I am getting this error message every time. I tried everything I know, this is only a small litter it is not that big... please help me. Here is my code:

\documentclass[11pt,a4paper]{article}
\usepackage{ngerman}
\usepackage[ngerman]{babel}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{marvosym}
\usepackage{ifpdf}
\usepackage[pdftex]{color}
\ifpdf
  \usepackage[pdftex]{graphicx}
\else
  \usepackage[dvips]{graphicx}\fi

\pagestyle{empty}

\usepackage[scale=0.775]{geometry}
\setlength{\parindent}{0pt}
\addtolength{\parskip}{6pt}

\def\firstname{Nabil}
\def\familyname{Sifo}
\def\FileAuthor{\firstname~\familyname}
\def\FileTitle{\firstname~\familyname's Bewerbungsschreiben}
\def\FileSubject{Bewerbungsschreiben}
\def\FileKeyWords{\firstname~\familyname, Bewerbungsschreiben}

\renewcommand{\ttdefault}{pcr}
\hyphenation{ins-be-son-de-re}
\usepackage{url}
\urlstyle{tt}
\ifpdf
  \usepackage[pdftex,pdfborder=0,breaklinks,baseurl=http://,pdfpagemode=None,pdfstartview=XYZ,pdfstartpage=1]{hyperref}
  \hypersetup{
    pdfauthor   = \FileAuthor,%
    pdftitle    = \FileTitle,%
    pdfsubject  = \FileSubject,%
    pdfkeywords = \FileKeyWords,%
    pdfcreator  = \LaTeX,%
    pdfproducer = \LaTeX}
\else
  \usepackage[dvips]{hyperref}
\fi

\definecolor{firstnamecolor}{RGB}{125,85,85}
\definecolor{familynamecolor}{RGB}{138,74,57}
\hypersetup{pdfborder=0 0 0}

\begin{document}{}
\begin{block}{Blocktitel}
\sffamily   % for use with a résumé using sans serif fonts;
%\rmfamily  % for use with a résumé using serif fonts;
\hfill%
\begin{minipage}[t]{.6\textwidth}{}
    \raggedleft%
    {\bfseries {\color{firstnamecolor}\firstname}~{\color{familynamecolor}\familyname}}\\[.35ex]
    \small\itshape%
    Basler Straße 58a\\
    /9100 Freiburg im Breisgau\\[.35ex]
    \Mobilefone~+49 177 1642 709\\
    \Letter~\href{mailto:[email protected]}{[email protected]}
\end{minipage}\\[0.5em]
%
{\color{firstnamecolor}\rule{\textwidth}{.25ex}}
%
\begin{minipage}[t]{.4\textwidth}{}
    \raggedright%
    % {\bfseries {\color{firstnamecolor}
    \vspace*{1em}
    Allianz SE\\[.35ex]
    % }}
    \small%
    Fritz-Schäffer-Straße 9\\
    81737 München
\end{minipage}
%
\hfill
%
\begin{minipage}[t]{.4\textwidth}
    \raggedleft % US style
    \today
    %April 6, 2006 % US informal style
    %05/04/2006 % UK formal style
\end{minipage}\\[1em]
\raggedright
\begin{block}{}


{\bfseries \color{familynamecolor}Bewerbung als blaaaaaal}\\[1.5em]

Sehr geehrtere Damen und Herren,\\[1em]
%
bla bla \\
blabla


%Yours sincerely,\\[2em] % if the opening is "Dear Mr(s) Doe,"
Mit freundlichen Grüßen,\\[3em] % if the opening is "Dear Sir or Madam,"
%
%\includegraphics[scale=0.75]{signature_blue}\\
{\bfseries \firstname~\familyname}\\
%
\vfill%
{\slshape \bfseries Bewerbungsunterlagen}\\
% {\slshape Curriculum Vit\ae{}}
\end{block}
\end{block}
\end{document}

Answer 1

Stop loading the obsolete and deprecated ngerman package, which was last updated in 1998, and the ! TeX capacity exceeded, sorry [input stack size=5000] error no longer occurs.

At a minimum, you should further define the block environment (possibly by loading a suitable package?), replace \setlength{\parindent}{0pt} \addtolength{\parskip}{6pt} with something like \usepackage[skip=0.5\baselineskip]{parskip}, and replace

\href{mailto:[email protected]}{[email protected]}

with

\href{mailto:[email protected]}{\nolinkurl{[email protected]}}

Oh, and do yourself a favor and replace

\usepackage[pdftex]{color}
\ifpdf
  \usepackage[pdftex]{graphicx}
\else
  \usepackage[dvips]{graphicx}\fi

with

\usepackage{color}
\usepackage{graphicx}

unless, of course, you treasure code clutter.