[texhax] Beamer and dev package

[Sridhar M.A.]

I am trying to typeset some text in devanagari script using the dev
package in a beamer slide. The compilation gives me an error 

    ! LaTeX Error: \labelenumi undefined.
    ...
    ! LaTeX Error: \labelenumii undefined.

Proceeding further, I get the pdf file with proper text. Is this
behaviour expected? The plain latex/pdflatex using the article class
does not give the error.

Here is the MWE :

  \def\DevnagVersion{2.15}\documentclass[svgnames,x11names,serif]{beamer}
  %
    \usepackage{dev}

  \mode<presentation>  
  \usetheme{AnnArbor}
  \usefonttheme{structurebold}

  \begin{document}

  \begin{frame}[t]
    \frametitle{Z}
       {\dn ao\2 nm, EfvAy}

  \end{frame}

  \begin{frame}[t]
    \frametitle{A}
       \begin{enumerate}
         \item Line 1
         \item Line 2
       \end{enumerate}

  \end{frame}

  \end{document}

Regards,

-- 
Sridhar M.A.                                 GPG KeyID : F6A35935
  Fingerprint: D172 22C4 7CDC D9CD 62B5  55C1 2A69 D5D8 F6A3 5935

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