I keep getting the "infamous" cache error in Biber even with version 2.13

Question

I have been looking at the following TeX StackExchange questions:

Alas, even after deleting the cache AND checking that my biber --version is 2.13 (so, greather than 2.2), I keep getting the infamous:

ERROR - Error loading data source package 'Biber::Input::file::biblatex':
Can't locate Biber/Input/file/biblatex.pm in @INC
(you may need to install the Biber::Input::file::biblatex module)
(@INC contains:
C:\Users\<username>\AppData\Local\Temp\par-696e6e6f766163696f6e\cache-04a19264eaffcea447b2351b2a1f132a70bdc8b1\inc\lib
C:\Users\<username>\AppData\Local\Temp\par-696e6e6f766163696f6e\cache-04a19264eaffcea447b2351b2a1f132a70bdc8b1\inc
CODE(0x3711510) CODE(0x3711708)) at (eval 366) line 1.

There is indeed no Biber/Input/file/biblatex.pm at all. There is only bibtex.pm and biblatexml.pm. So Biber shouldn't be trying to look for that file at all. Can you run biber --version without error? Can you run a very simple MWE like https://gist.github.com/moewew/6e738db2c03f1e1a2653e33d3101b524 without error? If those run without error, can you please show us a complete .tex document that reproduces the issue? — moewe, Sep 28 '19 at 12:41
While working on the MBE I discovered the error, apparently the option [datatype=biblatex] for addbibresource was at fault (I don't really know where I copied that from). Now the problem is that because I set the output folder as ./pdf/, xelatex is unable to find the bbl file and thus I still have undefined references. — Adrian, Sep 30 '19 at 10:54
We'd need to know more about your editor setup and workflow to answer the question about the ./pdf/ folder, so I suggest you ask a new question about that. I should mention that output/build folders like ./pdf/ usually cause much more trouble than they are worth, so you may want to consider just dropping it. — moewe, Oct 03 '19 at 06:39

score 2 · Accepted Answer · answered Oct 03 '19 at 06:48

Fortunately, this is not the infamous cache bug.

This error can be reproduced in the following document

\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[style=authoryear, backend=biber]{biblatex}

\addbibresource[datatype=biblatex]{biblatex-examples.bib}


\begin{document}
\cite{sigfridsson}
\printbibliography
\end{document}

And it occurs if the datatype key of \addbibresource gets passed an unknown value. Currently the only accepted values are bibtex (for .bib files) and biblatexml (for .bltxml files). All other values will cause Biber to try and load non-existing files.

I opened https://github.com/plk/biber/issues/289 to discuss making the error message a bit more useful.

Just to confirm, this is fixed in recent versions of biber which will give an error and report valid datatypes. — PLK, Jan 18 '20 at 10:39

I keep getting the "infamous" cache error in Biber even with version 2.13

1 Answers1