Textos paralelos ¡No puedes usar `\lastbox' en modo vertical!

Textos paralelos ¡No puedes usar `\lastbox' en modo vertical!

Hay un error al cerrar \Columnsen una configuración de texto paralelo y no puedo entender qué lo está causando.

\documentclass[draft]{book}
%% Additional note from LLT: you don't need fontspec or xelatex for reledmac or reledpar to work. However, if your document _does_ involve different languages with different scripts/fonts (e.g. English and Greek or Arabic etc), then it's a good idea to use those packages -- see https://www.overleaf.com/read/wfdxqhcyyjxz for an example
%
\usepackage[T2A, T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english,russian, french]{babel}
%\usepackage{lmodern}
\usepackage{lscape}
\usepackage[a4paper, landscape, left=1in, right=1in, bottom=1.5in, top=1in]{geometry} %, showframe]
\usepackage[series={},nocritical,noend,noeledsec,nofamiliar,noledgroup]{reledmac}

\usepackage{reledpar}
\usepackage{epigraph}

\setlength\epigraphwidth{.3\textwidth}
\setlength\epigraphrule{0pt}

\usepackage{comment}        

\usepackage[parfill]{parskip}
\setlength{\parskip}{1ex}
\setlength{\parindent}{1ex}

\setgoalfraction{0.8}
\numberlinefalse
\begin{document}   
\begin{sloppypar}

\begin{pairs}
    \begin{Leftside}
    \selectlanguage{russian}
      \beginnumbering

        \pstart[
        \chapter*{\foreignlanguage{russian}{ИСТОРИЯ ПЕРВАЯ}}
        \section*{\foreignlanguage{russian}{Суета Вокруг Дивана}}]
        \pend
        \pstart
        Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. Бессмыссленный текст. 
        \pend
      \endnumbering
    \end{Leftside}
    \begin{Rightside}
    \selectlanguage{english}
      \beginnumbering

        \pstart[
        \chapter*{THE FIRST TALE}
        \section*{Run Around a Sofa}]
        \pend
        \pstart
        Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. Dummy text. 
        \pend

     \endnumbering
    \end{Rightside}
\end{pairs} 
\Columns
\end{sloppypar}
\end{document}

Línea 58. No puedes usar `\lastbox' en modo vertical. \Columnas

Respuesta1

Si agrego texto ficticio después de los argumentos opcionales de \pstart, funciona bien para mí:

\documentclass[draft]{book}
%% Additional note from LLT: you don't need fontspec or xelatex for reledmac or reledpar to work. However, if your document _does_ involve different languages with different scripts/fonts (e.g. English and Greek or Arabic etc), then it's a good idea to use those packages -- see https://www.overleaf.com/read/wfdxqhcyyjxz for an example
%
\usepackage[T2A, T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english,russian, french]{babel}
%\usepackage{lmodern}
\usepackage{lscape}
\usepackage[a4paper, landscape, left=1in, right=1in, bottom=1.5in, top=1in]{geometry} %, showframe]
\usepackage[series={},nocritical,noend,noeledsec,nofamiliar,noledgroup]{reledmac}

\usepackage{reledpar}
\usepackage{epigraph}

\setlength\epigraphwidth{.3\textwidth}
\setlength\epigraphrule{0pt}

\usepackage{comment}

\usepackage[parfill]{parskip}
\setlength{\parskip}{1ex}
\setlength{\parindent}{1ex}

\setgoalfraction{0.8}
\numberlinefalse
\begin{document}
\begin{sloppypar}

\begin{pairs}
    \begin{Leftside}
    \selectlanguage{russian}
      \beginnumbering

        \pstart[
        \chapter*{\foreignlanguage{russian}{ИСТОРИЯ ПЕРВАЯ}}
        \section*{\foreignlanguage{russian}{Суета Вокруг Дивана}}]
        sss
        \pend

      \endnumbering
    \end{Leftside}
    \begin{Rightside}
    \selectlanguage{english}
      \beginnumbering

        \pstart[
        \chapter*{THE FIRST TALE}
        \section*{Run Around a Sofa}]
        sss
        \pend

     \endnumbering
    \end{Rightside}
\end{pairs}
\Columns
\end{sloppypar}
\end{document}

información relacionada