! LaTeX Error : Command \Asbuk already defind.
ファイル russian.def にコマンド \Asbuk の定義があります．
これが関係しているのでしょうか？
TeX の使用環境は以下の通りです．
・Windows 7 Professional
・\documentclass[a4paper,12pt]{jarticle} で使用．
・logファイル（ babeltesttn.log ）の内容を以下にコピーします．
・logファイルは，途中を省略してあります．
------------------------------------------------
This is e-pTeX, Version 3.1415926-p3.3-110825-2.4 (sjis)
(TeX Live 2012/W32TeX) (format=platex 2012.5.25) 20 OCT 2012 15:06
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
**babeltesttn.tex
(./babeltesttn.tex
pLaTeX2e <2006/11/10>+0 (based on LaTeX2e <2011/06/27> patch level 0)
Babel <v3.8m> and hyphenation patterns for english, german-x-2011-07-01,
ngerman-x-2011-07-01, afrikaans, ancientgreek, ibycus, arabic, armenian,
basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danish,
dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi,
finnish, french, galician, german, ngerman, swissgerman, monogreek,
greek, hungarian, icelandic, assamese, bengali, gujarati, hindi, kannada,
malayalam, marathi, oriya, panjabi, tamil, telugu, indonesian, interlingua,
irish, italian, kurmanji, lao, latin, latvian, lithuanian, mongolian,
mongolianlmc, bokmal, nynorsk, polish, portuguese, romanian, russian,
sanskrit, serbian, serbianc, slovak, slovenian, spanish, swedish,
turkish, turkmen, ukrainian, uppersorbian, welsh, dumylang,
nohyphenation, loaded.
(c:/usr/local/share/texmf/tex/platex/base/jarticle.cls
(c:/usr/local/share/texmf/tex/platex/base/jsize12.clo
File: jsize12.clo 2006/06/27 v1.6 Standard pLaTeX file (size option)
(c:/usr/local/share/texmf/tex/latex/base/fontenc.sty
(c:/usr/local/share/texmf/tex/latex/cyrillic/ot2enc.def
(c:/usr/local/share/texmf/tex/latex/base/t1enc.def
(c:/usr/local/share/texmf/tex/latex/babeltn/babel.sty
(c:/usr/local/share/texmf/tex/latex/babeltn/dutch.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/babel.def
(c:/usr/local/share/texmf/tex/latex/babeltn/bahasai.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/basque.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/breton.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/bulgarian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/catalan.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/croatian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/czech.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/danish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/dutch.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/esperanto.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/estonian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/finnish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/frenchb.ldf
*************************************
* Local config file frenchb.cfg used
(c:/usr/local/share/texmf/tex/latex/babeltn/frenchb.cfg))
(c:/usr/local/share/texmf/tex/latex/babeltn/galician.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/germanb.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/greek.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/lgrenc.def
(c:/usr/local/share/texmf/tex/latex/babeltn/interlingua.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/irish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/italian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/latin.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/lsorbian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/magyar.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/ngermanb.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/norsk.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/norsk.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/polish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/portuges.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/romanian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/samin.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/swedish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/scottish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/serbian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/slovak.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/slovene.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/turkish.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/ukraineb.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/usorbian.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/welsh.ldf
(c:/usr/local/share/texmf/tex/latex/babeltn/english.ldf
(c:/usr/local/share/texmf/tex/tntexfiles/fromxpstytn/scalefnt.sty)
(c:/usr/local/share/texmf/tex/latex/graphics/keyval.sty
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/mls.sty
(c:/usr/local/share/texmf/tex/latex/base/ifthen.sty
File: diagnose.sty 2000/11/01 v0.2 Diagnostic Utility
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/mlstrans.tex
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/mlsgalig.te
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/buryat.def
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/english.def
(c:/usr/local/share/texmf/tex/tntexfiles/mongoltn/montex/texinput/russian.def
! LaTeX Error: Command \Asbuk already defined.
Or name \end... illegal, see p.192 of the manual.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
l.61 ...\Qh\or \"A\or \Yu\or \Ya\else\@ctrerr\fi}}
%
? h
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
? x
Here is how much of TeX's memory you used:
・・・・・・・・
No pages of output.
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以上です．何が原因でしょうか？ 教えて下さい．よろしくおねがいします．