\vsize.7\vsize\def \0#1#2{#2h#1}\let\$e \hsize\vsize\makeatletter
\textheight\vsize\everypar{}\raggedbottom\def\2#1{#1#1}\parskip12
\p@ \def\normalsize{\escapechar \m@ne\error@fontshape\selectfont}
\normalsize\def\!#1#2#3{#2#1#3#1}\def \.{\!\${ gr\2}{\5{}bo\2tl}}
\def\g{\.\ifnum\count@=\@ne\else s\fi~}\def\5#1{n#1 }\parindent 0
pt\def\7#1#2{#2#1d}\def\9#1#2 {#2a#1}\def\h{\the\count@\g\!g{\9nh
}{in} o\5{ \0\$t}\9\2w l}\count@\unitlength\loop\2{\h,\\ }\7\5aif
1\.\!a{  \0os\7lu }{\7i{\2c}\$nt}\2ly \9\2f  l,\\\advance \count@

\def\and{%                  % \begin{tabular}
  \end{tabular}%
  \hskip 1em \@plus.17fil%
  \begin{tabular}[t]{c}}%   % \end{tabular}

\newcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
                                    {3.25ex \@plus1ex \@minus.2ex}%
                                    {-1em}%
                                    {\normalfont\normalsize\bfseries}}

I have this fancy header setup.

\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhead[LO,RE]{\thepage}
\cfoot{}
\setlength{\headheight}{15pt}

It works fine, until I add the tkiz package:

\usepackage{tkz-kiviat,numprint,fullpage}
\usetikzlibrary{arrows}

:8369948 ! Undefined control sequence.
\degree ->\ERROR

l.83 ...normal mode {\degree} and $in math{\degree
                                                  } mode $.
?
[1] (./xec.aux) )
(\end occurred inside a group at level 1)

:8370004 I don't get that error. All I get is:

LaTeX Font Warning: Font shape `TS1/TimesNewRoman(0)/m/n' undefined
(Font)              using `TS1/cmr/m/n' instead
(Font)              for symbol `textdegree' on input line 1.

[1] (./test.aux)

LaTeX Font Warning: Some font shapes were not available, defaults substituted.

 )
(\end occurred inside a group at level 1)

### semi simple group (level 1) entered at line 50 (\begingroup)
### bottom level

\documentclass{article}

\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{amsmath}

\usepackage{fontspec}
\setmainfont{Times New Roman}

\usepackage{polyglossia}
\setmainlanguage{magyar}

\usepackage{siunitx}

\usepackage{hyperref,bookmark}

\newcommand{\degree}{\text{\textdegree}}

\begin{document}

Test degree in normal mode {\degree} and $in math\degree mode $.

And here is a strange thing. $0.9°$

\end{document}

\documentclass{article}

\usepackage{tikz}

\begin{document}

\begin{tikzpicture}[thick]
\draw (0,2) -- ++(1,-2) -- ++(1,2)
      ++(1,0) -- ++(0,-2);
\draw (0,-1) -- ++(1,-2) -- ++(1,2) -- ++(1,-2) -- ++(1,2)
      ++(2,0) -- ++(-1,0) -- ++(0,-2) -- ++(1,0) ++(0,1) -- ++(-1,0);
\draw (0,-4) -- ++(0,-2) -- ++(1,0)
      ++(2,1) circle (1) ++(2,1) -- ++(1,-2) -- ++(1,2)
      ++(2,0) -- ++(-1,0) -- ++(0,-2) -- ++(1,0) ++(0,1) -- ++(-1,0);
\draw[rounded corners] (0,-7) -- ++(1,-1.25) -- ++(1,1.25) ++(-1,-1.25) -- ++(0,-0.75)

\documentclass{article}

\usepackage{etoolbox}

%% stores the list length for later use
\newcounter{listlengthregister}
\newcommand{\listlength}[1]{%
	\setcounter{listlengthregister}{0}%
	\forlistloop{%
		\stepcounter{listlengthregister}%
	}{#1}
}

%% ___________________ Miscelaneous Commands for Test Porpuses ____________________

%% \tointernallist{<internal list>}{<csv list>}
\newcommand{\tointernallist}[2]{%
	\forcsvlist{\listgadd{#1}}{#2}%
}


%% print internal list
\newcommand{\printinternallist}[1]{%

\makeatletter
\newcommand{\listlength}[1]{%
        \setcounter{listlengthregister}{0}%
        \forlistloop{%
                \stepcounter{listlengthregister}%
         \@gobble
        }{#1}
}
\makeatother

\makeatletter
\newcommand{\listlength}[1]{%
        \setcounter{listlengthregister}{0}%
        \forlistloop{%
                \stepcounter{listlengthregister}%
         \@gobble
        }{#1}%
}
\makeatother