# Compilation error: “! Argument of ” has an extra }"

My TeX document gives me the error:

("C:\Program Files\MiKTeX 2.9\tex\latex\base\ulasy.fd") ! Argument of " has an extra }. \par l.32 }

Can anyone tell me what's wrong? This is my code:

\documentclass[twoside,12pt,a4paper]{report}
%\usepackage{reportpage}
\usepackage{epsf,german}
\usepackage{graphics, graphicx}
\usepackage[utf8]{inputenc}
\usepackage{latexsym}
\usepackage[margin=10pt,font=small,labelfont=bf]{caption}
\usepackage{amsmath}
\usepackage{tikz}
\usepackage{pgfplots}

\textwidth 14cm
\theight 22cm
\topmargin 0.0cm
\evensidemargin 1cm
\oddsidemargin 1cm
%\footskip 2cm
\parskip0.5explus0.1exminus0.1ex

\begin{document}
\begin{tikzpicture}
[   cnode/.style={draw=black,fill=#1,minimum width=3mm,circle},
]
\node[cnode=red,label=0:$\Sigma$] (s) at (6,-3) {};
\node at (0,-4) {$\vdots$};
\node at (3,-4) {$\vdots$};
\foreach \x in {1,...,4}
{   \pgfmathparse{\x<4 ? \x : "n"}
\node[cnode=blue,label=180:$x_{\pgfmathresult}$] (x-\x) at (0,{-\x-div(\x,4)}) {};
\node[cnode=gray,label=90:$\varphi_{\pgfmathresult}$] (p-\x) at (3,{-\x-div(\x,4)}) {};
\draw (p-\x) -- node[above,sloped,pos=0.3] {$\omega_{\pgfmathresult}$} (s);
}
\foreach \x in {1,...,4}
{   \foreach \y in {1,...,4}
{   \draw (x-\x) -- (p-\y);
}
}
\end{tikzpicture}

\end{document}

• What is that pgfmathparse line suppose to do? And why are you using " there? – daleif Jun 14 '18 at 16:59
• What is \theight? Did you maybe intend to write \textheight? – Mico Jun 14 '18 at 17:00
• Why do you load both graphics and graphicx? I suggest loading just the latter package. Any why are you loading epsf -- that hasn't been necessary for at least five years. The latexsym package shouldn't be loaded unless you run LaTeX in "compatibilty mode", i.e., if you wish to emulate the good old days of LaTeX2.09 -- which ended in 1994 [!]. Do yourself a big favor and load the amssymb package instead. – Mico Jun 14 '18 at 17:02

Your code is not good as it seems like a patch of very old documents. It's important to be up-to-date.

1. The package epsf is obsolete and should not be used in new documents.
2. The package german is obsolete and should not be used in new documents (use babel).
3. The package latexsym is obsolete and should not be used in new documents (use amssymb instead).
4. Loading graphics is useless, because you also load graphicx.
5. It's unclear why using \oddsidemargin=1cm, which leads to a left margin of 3.54cm (use geometry for set the pagination parameters).
6. Starting from April 2018, \usepackage[utf8]{inputenc} can be omitted.
7. With German as the main language, \usepackage[T1]{fontenc} is necessary.

Edited version, with \usetikzlibrary{babel} you need no change to the document body.

\documentclass[twoside,12pt,a4paper]{report}

\usepackage[
textwidth=14cm,
textheight=22cm,
hratio=1:1,
vratio=1:1,
heightrounded,
]{geometry}

%\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}

\usepackage{amsmath,amssymb}

\usepackage{graphicx}
\usepackage[margin=10pt,font=small,labelfont=bf]{caption}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{babel}

\begin{document}

\begin{tikzpicture}
[   cnode/.style={draw=black,fill=#1,minimum width=3mm,circle},
]
\node[cnode=red,label=0:$\Sigma$] (s) at (6,-3) {};
\node at (0,-4) {$\vdots$};
\node at (3,-4) {$\vdots$};
\foreach \x in {1,...,4}
{   \pgfmathparse{\x<4 ? \x : "n"}
\node[cnode=blue,label=180:$x_{\pgfmathresult}$] (x-\x) at (0,{-\x-div(\x,4)}) {};
\node[cnode=gray,label=90:$\varphi_{\pgfmathresult}$] (p-\x) at (3,{-\x-div(\x,4)}) {};
\draw (p-\x) -- node[above,sloped,pos=0.3] {$\omega_{\pgfmathresult}$} (s);
}
\foreach \x in {1,...,4}
{   \foreach \y in {1,...,4}
{   \draw (x-\x) -- (p-\y);
}
}
\end{tikzpicture}

\end{document}