[Tex/LaTex] Option clash for package color. \RequirePackage

colorincompatibility

I'm very new to LaTeX, and I'm having a problem which seems to originate from the following lines of code.

\RequirePackage[usenames]{color}
\RequirePackage{fancyhdr}
\RequirePackage{nomencl}
\RequirePackage{titlesec}
\RequirePackage{titletoc}
\RequirePackage{url}
\urlstyle{tt}

Option clash for package color. \RequirePackage error ocurred
at line \RequirePackage{fancyhdr}. Any idea?

Corresponding log output is this:

l.73 \RequirePackage
                    {fancyhdr}
The package color has already been loaded with options:
  []
There has now been an attempt to load it with options
  [usenames]
Adding the global options:
  ,usenames
to your \documentclass declaration may fix this.
Try typing  <return>  to proceed.

Best Answer

fancyhdr has nothing to do with the problem. Some package you load earlier already loads color without the usenames option.

The error message shows \RequirePackage, because this command scans for a possible optional argument; the complete syntax is

\RequirePackage[<options>]{<package>}[<YY>/<MM>/<DD>]

So when processing your command, LaTeX absorbs \RequirePackage[usenames]{color} and examines the next token in order to see if it is [. Since it isn't, it processes the call and stops because of the error; the error message shows the last token read by TeX.

Related Solutions

[Tex/LaTex] Error:Option Clash for package color

In addition to David's suggestion, I think this is not a standard beamer code. Consider the following:

\documentclass{beamer}
\usepackage{amssymb,amsfonts,amsmath}
\usepackage{graphicx}

\usetheme{split}
\usecolortheme{crane}
\setbeamertemplate{navigation symbols}{}
\begin{document}
\begin{frame}{Title}{Subtitle}
    Content
\end{frame}
\end{document}

enter image description here

[Tex/LaTex] Option clash for package xcolor

Once you get the error message:

! LaTeX Error: Option clash for package xcolor.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.17

type "h" (without the quotation marks, for help) in the output console and you get

? h
The package xcolor has already been loaded with options:
  []
There has now been an attempt to load it with options
  [table]
Adding the global options:
  ,table
to your \documentclass declaration may fix this.

So, you get an explanation of the problem and a possible solution. Doing as advised you prevent the clash:

\documentclass[a4paper,oneside,article,table]{memoir}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[danish]{babel}
\usepackage{lmodern}
\usepackage{graphicx}
    \graphicspath{{Figures/}}
\usepackage{fullpage}
\usepackage{modroman}
\usepackage{float}
\usepackage{caption}
\usepackage[numbers]{natbib}
\usepackage{url}
\usepackage{pgfplots}
\usepackage{mathtools}
\usepackage{xcolor}

\begin{document}
test
\end{document}

Now, the problem was that another package (pgfplots, in this case) had already loaded the xcolor package without options, so loading it after pgfplots with the table option produces the clash. One way to prevent the problem was already presented (using table as class option); another solution is to load xcolor with the table option before pgfplots:

\documentclass[a4paper,oneside,article]{memoir}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[danish]{babel}
\usepackage{lmodern}
\usepackage{graphicx}
    \graphicspath{{Figures/}}
\usepackage{fullpage}
\usepackage{modroman}
\usepackage{float}
\usepackage{caption}
\usepackage[numbers]{natbib}
\usepackage{url}
\usepackage[table]{xcolor}
\usepackage{pgfplots}
\usepackage{mathtools}

\begin{document}
test
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Error:Option Clash for package color

[Tex/LaTex] Option clash for package xcolor

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