I have been dealing with this problem some days. Maybe you can help me? When running pdflatex I get this error:
! Argument of \UTFviii@three@octets has an extra }.
<inserted text>
\par
l.15
I've run across a `}' that doesn't seem to match anything.
For example, `\def\a#1{...}' and `\a}' would produce
this error. If you simply proceed now, the `\par' that
I've just inserted will cause me to report a runaway
argument that might be the root of the problem. But if
your `}' was spurious, just type `2' and it will go away.
Runaway argument?
Minimal Working Example
\documentclass[12pt,twoside]{report}
\usepackage[spanish]{babel}
\usepackage[utf8]{inputenc}
\usepackage{fancyhdr}
\pagestyle{fancy}
% no recuerdo para que era fancy
\usepackage{csquotes}
\usepackage[backend=biber]{biblatex}
\addbibresource{bibtex.bib}
\begin{document}
\cite{klamt1993cosmo} \cite{quantum-continuum-tomasi2005} \cite{tomasi-PCM1981}.
\printbibliography
\end{document}
The bib file i am using is:
% This file was created with JabRef 2.10.
% Encoding: UTF-8
@Article{klamt1993cosmo,
Title = {COSMO: a new approach to dielectric screening in solvents with explicit expressions for the screening energy and its gradient},
Author = {Klamt, Andreas and Sch{\"u}{\"u}rmann, GJGJ},
Journal = {Journal of the Chemical Society, Perkin Transactions 2},
Year = {1993},
Number = {5},
Pages = {799--805},
__markedentry = {},
Publisher = {Royal Society of Chemistry}
}
@Article{tomasi-PCM1981,
Title = {Electrostatic interaction of a solute with a continuum. A direct utilizaion of AB initio molecular potentials for the prevision of solvent effects},
Author = {Miertu{\v{s}}, S and Scrocco, E and Tomasi, J},
Journal = {Chemical Physics},
Year = {1981},
Number = {1},
Pages = {117--129},
Volume = {55},
Publisher = {Elsevier}
}
@Article{quantum-continuum-tomasi2005,
Title = {Quantum mechanical continuum solvation models},
Author = {Tomasi, Jacopo and Mennucci, Benedetta and Cammi, Roberto},
Journal = {Chemical reviews},
Year = {2005},
Number = {8},
Pages = {2999--3094},
Volume = {105},
Publisher = {ACS Publications}
}
I can not change this file, any change I make jabRef return them in this way again.
Only for it helps, I have download all packages (texlive, biber 1.9, texmaker) from promt, and I am using Debian.
When I remove \printbibliography errors are gone (but I need to print it)
Any idea of what is going on?
EDIT i do not know if it is an answer but changing to biblatex it works.

biber1.9 is very, very old. In TeX Live 2016 and TeX Live 2017 pretest we have currentlybiber2.7. Last version in TeX Live 2015 wasbiber2.4. AFAIKbiber1.9 is from TeX Live 2014. As I cannot reproduce the problem with TeX Live 2016 or TeX Live 2017 pretest but only with TeX Live 2014, I would recommend to update. – Schweinebacke May 30 '17 at 06:21biber --output-safechars <file>– May 30 '17 at 07:53