"Empty bibliography"

Question

For some reason, BibLaTeX doesn't work. Here's my minimal example.

\documentclass[a4paper]{article}

\usepackage[utf8]{inputenc}
\usepackage{csquotes}

\RequirePackage{filecontents}
\begin{filecontents}{refs.bib}
@book{doe13,
    address    = {City},
    title      = {A nice title},
    shorttitle = {Short title},
    publisher  = {Publisher},
    author     = {Doe, John},
    year       = {2013}
}
\end{filecontents}

\usepackage[backend=biber]{biblatex}
\addbibresource{refs.bib}

\begin{document}

Hello. \cite{doe13}.

\nocite{*}

\printbibliography

\end{document}

I am using MiKTeX 2.9 32-bit.

When I run pdflatex sample.tex, I get the following warings:

LaTeX Warning: Citation 'doe13' on page 1 undefined on input line 23.
LaTeX Warning: Empty bibliography on input line 27.

The generated PDF contains

Hello. [doe13 ].

and the page number, nothing else. There's no bibliography.

Running biber sample gives me the following message:

> biber sample
INFO - This is Biber 1.5
INFO - Logfile is 'sample.blg'
data source C:\Users\Paul\AppData\Local\Temp\par-5061756c\cache-890efc00b3ca6b77
5c7d44a325c1349fb2a3a3bd\inc\lib/Biber/LaTeX/recode_data.xml not found in .

Like Alan Munn stated, the warning in biber can be fixed by removing the entire directory C:\Users\Paul\AppData\Local\Temp\par-5061756c. After that, new warnings occur, the pdflatex warnings are the same as well as the resulting PDF.

> biber sample
INFO - This is Biber 1.5
INFO - Logfile is 'sample.blg'
INFO - Reading 'sample.bcf'
WARN - Warning: Found biblatex control file version 2.5, expected version 2.3
INFO - Using all citekeys in bib section 0
INFO - Processing section 0
INFO - Looking for bibtex format file 'refs.bib' for section 0
INFO - Decoding LaTeX character macros into UTF-8
INFO - Found BibTeX data source 'refs.bib'

What else can I do?

Answer 1

According to the biber log it seems that biber and biblatex are out of sync. An upgrade to the most recent version of biber should fix the issue.

Answer 2

The error you are getting is a well known issue with biber. It creates binaries in a cache folder, and sometimes that can get corrupted. In order to solve the problem, you need to manually delete the cache folders. They are located in different places on different platforms:

• /var/folders/*/*/*/ (OSX, local GUI login shell)
• /var/tmp/ (OSX (remote ssh login shell), Unix)
• /tmp/ (Linux)
• C:\Documents and Settings\<username>\Local Settings\Temp (Windows/Cyg- win)
• C:\Windows\Temp (Windows)
• C:\Users\<username>\AppData\Local\Temp (Windows)

So in your case you can delete the folders inside C:\Users\Paul\AppData\Local\Temp, and then recompile your document with pdflatex, biber, pdflatex, pdflatex.