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So I wrote this:

\documentclass{exam}
\usepackage{biblatex}

\addbibresource{foo.bib,bar.bib}


\begin{document}


Blah blah blah. \cite{source}


\printbibliography


\end{document}

And I get these errors:

LaTeX Warning: Citation 'source' on page 1 undefined on input line X.
LaTeX Warning: Empty bibliography on input line Y.
LaTeX Warning: There were undefined references.
Package biblatex Warning: Please (re)run Biber on the file:(biblatex)                file(biblatex)                and rerun LaTeX afterwards.

I've used this setup before with other documents; I can't figure out why it's not working this time. What could be going on?

(Incidentally, I did try the [backend=biber] option with biblatex, but the same thing happens.)

crmdgn
  • 2,628
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    Did you run LaTeX/Biber/LaTeX? – Joseph Wright Apr 12 '23 at 14:42
  • @JosephWright When I try, I get this error message from Biber:

    ERROR - Cannot find control file 'file.tex.bcf'! - Did latex run successfully on your .tex file before you ran biber?

    (And it looks to me like latex did run successfully.)

     – crmdgn Apr 12 '23 at 15:01
  • How exactly did you call Biber? The .tex.bcf is odd – Joseph Wright Apr 12 '23 at 15:04
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    You need to call Biber on the basename of your main .tex file without the file extension (or explicitly on the .bcf file). Assuming your main .tex file is called mydoc.tex, you need to run biber mydoc (or biber mydoc.bcf). If you are using an editor to run Biber, make sure it is configured correctly: https://tex.stackexchange.com/q/154751/35864 – moewe Apr 12 '23 at 16:21
  • @moewe That fixed it (running biber mydoc). – crmdgn Apr 12 '23 at 18:36
  • Great! Then this question is a duplicate of the FAQ https://tex.stackexchange.com/q/63852/35864 that explains how to run BibTeX and Biber properly. See also https://tex.stackexchange.com/q/286706/35864 and the already linked https://tex.stackexchange.com/q/154751/35864. – moewe Apr 13 '23 at 07:44

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