Beamer - ! File ended while scanning use of \next

Question

I ran into an issue with the following code

\begin{document}


    \begin{frame}[fragile] % Start of frame

        \begin{columns}[t]

            \begin{column}{.02\textwidth}\end{column} % Empty spacer column

            \begin{column}{.465\textwidth} % The first column


                \begin{block}

                    \begin{minted}{c}
                        int main() {
                            return 0;
                        }
                    \end{minted}

                \end{block}
            \end{column}

        \end{columns}
    \end{frame} % End of frame
\end{document}

With the following error

Runaway argument?
! File ended while scanning use of \next.
<inserted text> 
            \par

I'm putting my solution here because I wasted hours trying to figure out what went wrong with such a cryptic error message

can you make your example compilable by including \documentclass and relevant \usepackages? It seems strange that indenting \end{frame} and putting comments after it would cause problems... — Herr K., Jan 29 '15 at 18:49
@KevinC it's not strange in beamer (one of the tags), due to the way the fragile option causes frames with verbatim material to be processed. — Gonzalo Medina, Jan 29 '15 at 19:32
@glitchyme In case you are interested in a work around http://tex.stackexchange.com/a/234789/36296 — samcarter_is_at_topanswers.xyz, Apr 11 '15 at 21:31
should be fixed with https://github.com/josephwright/beamer/commit/0c387deb21263aff6bc4864618e3cb74dcf32357 — samcarter_is_at_topanswers.xyz, Dec 13 '16 at 10:15
I just spent hours trying to find the source of the error rendering a .Rnw file with knitr until I found this discussion, especially the answer of glitchyme. — Migue Lo, Jul 28 '20 at 20:06

score 37 · Accepted Answer · edited Jun 05 '17 at 23:32

37

The fix was 2-part

\end{frame} can NOT be indented
\end{frame} cannot have any comments directly after it

Changing this line fixed the error.

edited Jun 05 '17 at 23:32

Torbjørn T.

206,688

answered Jan 29 '15 at 18:43

glitchyme

741

8

So we can neither properly indent our code nor comment why the particular line is poorly indented :-). – user87690 Aug 17 '17 at 14:30
3

Totally arbitrary "errors" like this is certainly the worst of Latex. You waste so much time looking for an invisible space, something you would never imagine could breaks the whole compilation up. – luchonacho Sep 25 '21 at 15:11

score 3 · Answer 2 · edited Jan 24 '18 at 20:07

3

I got the same error message and the problem was a [fragile] in

\begin{frame}[fragile]{Title}
 ...
\end{frame}

that I use for frames that contain LaTeX Listings code. I put it there before actually using Listings in that frame.

edited Jan 24 '18 at 20:07

Stefan Pinnow

29,535

answered Jan 24 '18 at 19:35

Eric

31
1

Beamer - ! File ended while scanning use of \next

2 Answers2

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