我有以下不起作用的“最小示例”：
%%%%%%%%%%%%%%%%
\documentclass[preprint]{JASA}
\begin{document}
\title{My Title}
\author{My Name}
\begin{abstract}
My abstract
\end{abstract}
\maketitle
\section{Introduction}
My paper starts here\ldots
\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
我在 Win10 机器上使用完美更新的 MikTeX 2.9，并且我刚刚从 JASA 网站下载了 documentclass：https://asa.scitation.org/jas/authors/manuscript
几个月前一切都运行正常（之后我对安装在我的 MikTeX 系统上的软件包进行了例行更新......）
几天前第一次运行这个程序时，编译器不再询问我
revtex4-1.cls
它不再存在于我的系统中。我检查了 CTAN，发现它现在被认为是过时的（他们现在似乎有 revtex4-2.cls）。事实上，在我的 MikTeX 安装中，我有 revtex4-2.cls，但不再有任何 revtex4-1.cls（在更新期间被包管理器删除了？）
我写信给该期刊的编辑部，他们告诉我应该手动安装 revtex4-1.cls。我这样做了，但现在系统不再抱怨：
%%%%%%%%%%%%%%%%%%%%%%
! Extra \endgroup.
\savedocument ->\endgroup
\document@inithook \true@sw {}\UseOneTimeHook {beg...
l.4 \begin{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%
如果我继续按回车键，我会得到一个包含单词的 PDF 输出
begindocument/before
在第一页的左上角。
这是什么意思？
.log 文件如下所示。
有人有意见吗？
谢谢，毛里齐奥
.LOG 文件开始：
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
This is pdfTeX, Version 3.14159265-2.6-1.40.21 (MiKTeX 20.11) (preloaded format=pdflatex 2020.11.17) 17 NOV 2020 09:25
entering extended mode
**./Test_JASA.tex
(Test_JASA.tex
LaTeX2e <2020-10-01> patch level 2
L3 programming layer <2020-10-27> xparse <2020-03-03> (JASA.cls
Document Class: JASA 2019/09/09 Version 1.1, document class
Class JASA Info:
Written by Amy Hendrickson, [email protected], http://www.texnology.com
on input line 93.
(C:\Users\Vianello\localtexmf\tex/Latex/revtex\revtex4-1.cls
Document Class: revtex4-1 2010/07/25/20:33:00 4.1r (http://publish.aps.org/revt
ex4/ for documentation)
Copyright (c) 2009 The American Physical Society.
mailto:[email protected]
Licensed under the LPPL:
http://www.ctan.org/tex-archive/macros/latex/base/lppl.txt
Arthur Ogawa <arthur_ogawa at sbcglobal dot net>
Based on work by David Carlisle <david at dcarlisle.demon.co.uk>.
ltxutil[2010/07/25/20:33:00 4.1r utilities package (portions licensed from W. E
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("C:\Program Files\MiKTeX 2.9\tex/context/base/mkii\supp-pdf.mkii"
[Loading MPS to PDF converter (version 2006.09.02).]
\scratchcounter=\count297
\scratchdimen=\dimen179
\scratchbox=\box73
\nofMPsegments=\count298
\nofMParguments=\count299
\everyMPshowfont=\toks29
\MPscratchCnt=\count300
\MPscratchDim=\dimen180
\MPnumerator=\count301
\makeMPintoPDFobject=\count302
\everyMPtoPDFconversion=\toks30
) ("C:\Program Files\MiKTeX 2.9\tex/latex/epstopdf-pkg\epstopdf-base.sty"
Package: epstopdf-base 2020-01-24 v2.11 Base part for package epstopdf
Package epstopdf-base Info: Redefining graphics rule for `.eps' on input line 4
85.
)
Package hyperref Info: Link coloring ON on input line 4.
("C:\Program Files\MiKTeX 2.9\tex/latex/hyperref\nameref.sty"
Package: nameref 2019/09/16 v2.46 Cross-referencing by name of section
("C:\Program Files\MiKTeX 2.9\tex/latex/refcount\refcount.sty"
Package: refcount 2019/12/15 v3.6 Data extraction from label references (HO)
)
("C:\Program Files\MiKTeX 2.9\tex/generic/gettitlestring\gettitlestring.sty"
Package: gettitlestring 2019/12/15 v1.6 Cleanup title references (HO)
)
\c@section@level=\count303
)
LaTeX Info: Redefining \ref on input line 4.
LaTeX Info: Redefining \pageref on input line 4.
LaTeX Info: Redefining \nameref on input line 4.
Class revtex4-1 Info: Overriding lineo.sty, restoring output routine, on input
line 4.
Class revtex4-1 Info: Line numbering not turned on yet on input line 4.
\openout3 = `Test_JASANotes.bib'.
Class revtex4-1 Info: Overriding \@LN@LLerror on input line 4.
Class revtex4-1 Warning: Assuming \noaffiliation for authors.
[1{C:/Users/Vianello/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}]
LaTeX Font Info: Trying to load font information for U+msa on input line 15.
("C:\Program Files\MiKTeX 2.9\tex/latex/amsfonts\umsa.fd"
File: umsa.fd 2013/01/14 v3.01 AMS symbols A
)
LaTeX Font Info: Trying to load font information for U+msb on input line 15.
("C:\Program Files\MiKTeX 2.9\tex/latex/amsfonts\umsb.fd"
File: umsb.fd 2013/01/14 v3.01 AMS symbols B
)
LaTeX Font Info: Trying to load font information for U+lasy on input line 15
.
("C:\Program Files\MiKTeX 2.9\tex/latex/base\ulasy.fd"
File: ulasy.fd 1998/08/17 v2.2e LaTeX symbol font definitions
) [2] (Test_JASA.aux) )
Here is how much of TeX's memory you used:
10135 strings out of 479768
147106 string characters out of 2876561
456149 words of memory out of 3000000
26942 multiletter control sequences out of 15000+200000
544329 words of font info for 64 fonts, out of 3000000 for 9000
1141 hyphenation exceptions out of 8191
92i,5n,98p,253b,332s stack positions out of 5000i,500n,10000p,200000b,50000s
<C:/Program Files/MiKTeX 2.9/fonts/type1/public/amsfonts
/cm/cmbx10.pfb><C:/Program Files/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmr1
2.pfb><C:/Program Files/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmss12.pfb><C
:/Program Files/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmss8.pfb><C:/Program
Files/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmssbx10.pfb>
Output written on Test_JASA.pdf (2 pages, 50132 bytes).
PDF statistics:
38 PDF objects out of 1000 (max. 8388607)
6 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)
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