luatex에서 font 사용이 자유롭다기에 beamer에 luatex을 적용해봤습니다.

문서내용은 아래와 같습니다.

\documentclass[CJK,unicode]{beamer}

\usepackage{kotex}
\usepackage{booktabs}
\usepackage{graphicx}
\usepackage{menukeys}
\setmainhangulfont{NanumGothic Eco}

\usetheme{metropolis}

\begin{document}
\begin{frame}
  테스트
\end{frame}

문서 실행시 나오는 에러는 아래와 같습니다.

This is LuaTeX, Version beta-0_76_0-2013121407 (rev 4627)
 restricted \write18 enabled_
(_/test_tex
LaTeX2e <2011/06/27>
Babel <3_9h> and hyphenation patterns for 3 languages loaded_
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Document Class: beamer 2015/01/05 3_36 A class for typesetting presentations (rc
s-revision 8a39122e1f63)
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Package hyperref Message: Stopped early_

)

Package hyperref Message: Driver (autodetected): hpdftex_

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! LuaTeX error /home/hhk/texmf/tex/latex/base/ltluatex_lua:136: attempt to i
ndex field '?' (a nil value)
stack traceback:
    /home/hhk/texmf/tex/latex/base/ltluatex_lua:136: in main chunk
    [C]: in function 'require'
    [string "\directlua "]:1: in main chunk_
l_228     \directlua{require("ltluatex")}

google에서 ltluatex에 대해서 검색해봐도 관련 이슈가 없는지 별다른 소득이 없었습니다.

혹시 이에 대한 원인이나 해결방법을 알고싶습니다.

TeX환경은 TeXLive 2013을 사용중입니다.