# [Tex/LaTex] ! Paragraph ended before \name was complete

accentsbiberbiblatexbraces

I recently upgraded my texlive packages at home and I cannot compile my document anymore due to the references. I googled for it for several days already and I cannot find anything recent about this issue (it does pop up from time to time apparently). Most of my entries are extracted from ADS (particularly the ones that give me troubles).

Here is a minimal entry with one of such troublesome entries.

\documentclass[11pt]{article}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@ARTICLE{2013APh....50...26A,
author = {{Abeysekara}, A.~U. and {Alfaro}, R. and {Alvarez}, C. and {{\'A}lvarez}, J.~D. and
{Tollefson}, K. and {Torres}, I. and {Ukwatta}, T.~N. and {Villase{\~n}or}, L. and
{Weisgarber}, T. and {Westerhoff}, S. and {Wisher}, I.~G. and
{Wood}, J. and {Yodh}, G.~B. and {Younk}, P.~W. and {Zaborov}, D. and
{Zepeda}, A. and {Zhou}, H.},
title = "{Sensitivity of the high altitude water Cherenkov detector to sources of multi-TeV gamma rays}",
journal = {Astroparticle Physics},
archivePrefix = "arXiv",
eprint = {1306.5800},
primaryClass = "astro-ph.HE",
keywords = {TeV gamma-ray astronomy, Water cherenkov, Cosmic ray},
year = 2013,
month = dec,
volume = 50,
pages = {26-32},
doi = {10.1016/j.astropartphys.2013.08.002},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
\end{filecontents}
\usepackage[language=english, style=numeric-comp, sorting=none, backend=biber, natbib=true, doi=false, bibencoding=utf8, isbn=false]{biblatex}

\begin{document}
This is a simple document\cite{2013APh....50...26A}
\end{document}


The error I get is

Runaway argument?
{{{hash=8b556f9238232cff536971111edddb4b}{family={{Abeysekara}}, fami\ETC.
! Paragraph ended before \name was complete.
\par
l.140
?


I guess the issue comes from the combination of curly braces + accents and other 'weird characters'.

I am using biber 2.10 and texlive 2017.45XXX (current archlinux's version).

At work, where it works fine, I'm using texlive 2017.44XXX and biber 2.7

Anything I can do about it apart from trying to downgrade my texlive (which is an ugly solution)?

Egreg's recommendations are very good, but it is easy to understand your situation. I tried to narrow down what was causing the problem and, as it turns out, it is one of the names {{\'A}lvarez}. Somehow, that is resulting in a .bbl file with unbalanced braces, which gives you problems in your compilation. Once you are using bibencoding=utf8 you can change it to {Álvarez} and get rid of the error. I don't have your other problematic cases at hand, but my guess is the doble braces at the start cause the problem (even though I don't understand why they should cause a problem at all). If this is the case, the number of instances for you to fix would be already much, much smaller.

\documentclass[11pt]{article}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@ARTICLE{2013APh....50...26A,
author = {{Abeysekara}, A.~U. and {Alfaro}, R. and {Alvarez}, C. and {Álvarez}, J.~D. and {Tollefson}, K. and {Torres}, I. and {Ukwatta}, T.~N. and {Villase{\~n}or}, L. and {Weisgarber}, T. and {Westerhoff}, S. and {Wisher}, I.~G. and {Wood}, J. and {Yodh}, G.~B. and {Younk}, P.~W. and {Zaborov}, D. and {Zepeda}, A. and {Zhou}, H.},
title = "{Sensitivity of the high altitude water Cherenkov detector to sources of multi-TeV gamma rays}",
journal = {Astroparticle Physics},
archivePrefix = "arXiv",
eprint = {1306.5800},
primaryClass = "astro-ph.HE",
keywords = {TeV gamma-ray astronomy, Water cherenkov, Cosmic ray},
year = 2013,
month = dec,
volume = 50,
pages = {26-32},
doi = {10.1016/j.astropartphys.2013.08.002},