This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdflatex 2014.7.25) 24 FEB 2017 09:53 entering extended mode restricted \write18 enabled. %&-line parsing enabled. **esercizi.tex (./esercizi.tex LaTeX2e <2011/06/27> Babel <3.9h> and hyphenation patterns for 3 languages loaded. (/usr/share/texlive/texmf-dist/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo File: size10.clo 2007/10/19 v1.4h Standard LaTeX file (size option) ) \c@part=\count79 \c@section=\count80 \c@subsection=\count81 \c@subsubsection=\count82 \c@paragraph=\count83 \c@subparagraph=\count84 \c@figure=\count85 \c@table=\count86 \abovecaptionskip=\skip41 \belowcaptionskip=\skip42 \bibindent=\dimen102 ) (/usr/share/texlive/texmf-dist/tex/generic/babel/babel.sty Package: babel 2013/12/03 3.9h The Babel package (/usr/share/texlive/texmf-dist/tex/generic/babel-italian/italian.ldf Language: italian 2013/11/22 v1.3f Italian support from the babel system (/usr/share/texlive/texmf-dist/tex/generic/babel/babel.def File: babel.def 2013/12/03 3.9h Babel common definitions \babel@savecnt=\count87 \U@D=\dimen103 ) \it@lettering=\count88 Package babel Info: Making " an active character on input line 98. \Virgola=\count89 )) ! LaTeX Error: File `etoolbox.sty' not found. Type X to quit or to proceed, or enter new name. (Default extension: sty) Enter file name: ! Emergency stop. l.14 \usepackage {graphicx,psfrag,color,pst-grad}^^M *** (cannot \read from terminal in nonstop modes) Here is how much of TeX's memory you used: 638 strings out of 495017 7582 string characters out of 6181021 61384 words of memory out of 5000000 3930 multiletter control sequences out of 15000+600000 3640 words of font info for 14 fonts, out of 8000000 for 9000 14 hyphenation exceptions out of 8191 23i,0n,23p,192b,36s stack positions out of 5000i,500n,10000p,200000b,80000s ! ==> Fatal error occurred, no output PDF file produced!