我在使用 etaremune 软件包时遇到了一个可能令人尴尬的简单问题。它似乎使用来自 xkeyval 的命令使 latex 和 pdflatex 都崩溃了。以下是导致我崩溃的 .tex 文件：
\documentclass{article}
\usepackage{etaremune}
\begin{document}
hi
\end{document}
这是 pdflatex 输出：
> This is pdfeTeX, Version 3.141592-1.21a-2.2 (Web2C 7.5.4) entering
> extended mode (./testeta.tex LaTeX2e <2003/12/01> Babel <v3.8d> and
> hyphenation patterns for american, french, german, ngerman, b ahasa,
> basque, bulgarian, catalan, croatian, czech, danish, dutch, esperanto,
> e stonian, finnish, greek, icelandic, irish, italian, latin, magyar,
> norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene,
> spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.
> (/usr/local/share/texmf-dist/tex/latex/base/article.cls Document
> Class: article 2004/02/16 v1.4f Standard LaTeX document class
> (/usr/local/share/texmf-dist/tex/latex/base/size10.clo))
> (./etaremune.sty
> (/usr/local/share/texmf-dist/tex/latex/xkeyval/xkeyval.sty
> (/usr/local/share/texmf-dist/tex/generic/xkeyval/xkeyval.tex
> (/usr/local/share/texmf-dist/tex/generic/xkeyval/keyval.tex))) !
> Undefined control sequence. l.39 \XKV@for@n
> {topsep,partopsep,itemsep,parsep,leftmargin,rightmargin,%
> ?
如果您能对我所遗漏的内容提供任何见解，我将不胜感激；如果需要更多信息来评估问题，请告诉我！