Há um erro ao fechar \Columns
uma configuração de texto paralelo e não consigo entender o que está causando isso.
\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}
Linha 58. Você não pode usar `\lastbox' no modo vertical. \Colunas
Responder1
Se eu adicionar algum texto fictício após os argumentos opcionais de \pstart, funcionará bem para mim:
\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}