皆様、いつもお世話になっております。下記のソースをコンパイルすると、
エラーメッセージが出ます。どうもedaenumerate環境内のrectbocでえらー
が出るようです。原因と回避方法を教えてください。

%-----test.tex----------------
\documentclass[12pt]{jsarticle}
\usepackage{emathP}
\usepackage[debug]{emathPs}
\usepackage{emathEy}
\usepackage{emathMw}
\begin{document}
\begin{center}
\LARGE 式　に　よ　る　説　明
\end{center}
\rectboxoval{10pt}
\begin{enumerate}
\item 式による説明をするとき、いろいろな数を文字を使って表す。
        次の数の表し方について
        \begin{rectbox}[rectboxwidth=3zw]
                \vspace{1.5zw}
        \end{rectbox}
        にあてはまる式を書きなさい。
        \begin{edaenumerate}<retusuu=1,gyoukan=1zw>[(1)]
                \item ２つの奇数は、整数$m,n$を使って、
                
                        $2m+1$,
                        \begin{rectbox}[rectboxwidth=3zw]
                                \vspace{1.5zw}
                        \end{rectbox}                        
                        
　　　　　　　　　　　　と表せる。
        \end{edaenumerate}
\end{enumerate}
\end{document}
%-------------------------------------------

ログは下記の通りです。

### platex  test.tex
This is pTeX, Version 3.14159-p3.1.3 (euc) (Web2C 7.4.5)
(./test.tex
pLaTeX2e <2001/09/04>+0 (based on LaTeX2e <2001/06/01> patch level 0)
(/usr/local/teTeX/share/texmf/ptex/platex/js/jsarticle.cls
Document Class: jsarticle 2003/11/24 okumura
) (/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathP.sty
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPp.sty
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPh.sty
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/epic.sty
Enhancements to Picture Environment. Version 1.2 - Released June 1, 1986
) (/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/eepic.sty
Extension to Epic and LaTeX. Version 1.1e - Released Dec 21, 1999
) (/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/eclarith.sty
eclarith.sty 1.1 --- July 1, 1992
) (/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emath.sty
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emath2e.sty
(/usr/local/teTeX/share/texmf/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/local/teTeX/share/texmf/tex/latex/amsmath/amstext.sty
(/usr/local/teTeX/share/texmf/tex/latex/amsmath/amsgen.sty))
(/usr/local/teTeX/share/texmf/tex/latex/amsmath/amsbsy.sty)
(/usr/local/teTeX/share/texmf/tex/latex/amsmath/amsopn.sty))
(/usr/local/teTeX/share/texmf/tex/latex/amsfonts/amssymb.sty
(/usr/local/teTeX/share/texmf/tex/latex/amsfonts/amsfonts.sty))
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathE.sty
(/usr/local/teTeX/share/texmf/tex/latex/tools/enumerate.sty)
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathEc.sty
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathC.sty
(/usr/local/teTeX/share/texmf/tex/latex/tools/calc.sty)
(/usr/local/teTeX/share/texmf/tex/latex/base/ifthen.sty))
(/usr/local/teTeX/share/texmf/tex/latex/graphics/keyval.sty))
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/jquote.sty)
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathK.sty))))
(/usr/local/teTeX/share/texmf/tex/latex/graphics/graphicx.sty
(/usr/local/teTeX/share/texmf/tex/latex/graphics/graphics.sty
(/usr/local/teTeX/share/texmf/tex/latex/graphics/trig.sty)
(/usr/local/teTeX/share/texmf/tex/latex/config/graphics.cfg)
(/usr/local/teTeX/share/texmf/tex/latex/graphics/dvips.def)))
(/usr/local/teTeX/share/texmf/tex/latex/graphics/color.sty
(/usr/local/teTeX/share/texmf/tex/latex/config/color.cfg)
(/usr/local/teTeX/share/texmf/tex/latex/graphics/dvipsnam.def))))
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPxy.sty)
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPk.sty)
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathT.sty
(/usr/local/teTeX/share/texmf/tex/latex/tools/array.sty)
(/usr/local/teTeX/share/texmf/tex/latex/tools/hhline.sty))
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPb.sty)
(/usr/local/teTeX/share/texmf/ptex/platex/misc/emath/emathPg.sty))
! Missing number, treated as zero.
<to be read again> 
                   =
l.24 ^^I^^I^^I\end{rectbox}
                           

▼関連発言
│
└◆6396:rectbox環境について [少しだけemath] 08/30 16:43
　└◆6397:Re:rectbox環境について [tDB] 08/30 19:22
　　└◆6398:Re[2]:rectbox環境について [少しだけemath] 08/30 20:25
　　　└◆6399:Re[3]:rectbox環境について [tDB] 08/30 20:51
　　　　└◆6400:Re[4]:rectbox環境について [少しだけemath] 08/30 21:22<-last