emathN.styのuebunki環境で以下のようにエラーが出ます

! Undefined control sequence.
\uebunki ->\edef \uetyuuten {\P@ue 
                                   }
l.22 \begin{uebunki}
                    
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.


Overfull \hbox (9.62216pt too wide) in paragraph at lines 8--27
[]|[] 
 []

[1

]
Overfull \vbox (3.88794pt too high) has occurred while \output is active []


[2] (./emathN.aux) ) 
Here is how much of TeX's memory you used:
 11636 strings out of 494457
 116384 string characters out of 3173175
 358239 words of memory out of 1500000
 14852 multiletter control sequences out of 15000+200000
 9316 words of font info for 40 fonts, out of 3000000 for 9000
 678 hyphenation exceptions out of 8191
 57i,8n,33p,671b,571s stack positions out of 5000i,500n,5000p,500000b,5000s

Output written on emathN.dvi (2 pages, 1424 bytes).


これはバグでしょうか？
それとも他のスタイルファイルの競合でしょうか？

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└◆892:emathN [hasegawa] 12/12 20:44<-last