fontspec_error.tex

% Our tocloft configuration

\usepackage{tocloft}
\newlength{\mylen} %% extra space
\setlength{\mylen}{.2cm}
\addtolength{\cftsecnumwidth}{\mylen} % add the extra space after section numbers
\addtolength{\cftsubsecnumwidth}{\mylen} % add the extra space after subsection numbers

% How we load fontspec

\usepackage{fontspec}

% A sample TOC header

\chapter*{Authors' Notes}
\addcontentsline{toc}{chapter}{Authors' Notes}

% The error we get

xelatex -shell-escape screen.tex
This is XeTeX, Version 3.14159265-2.6-0.99996 (TeX Live 2016) (preloaded format=xelatex)
 \write18 enabled.
entering extended mode
(./screen.tex
LaTeX2e <2016/03/31>
Babel <3.9r> and hyphenation patterns for 22 language(s) loaded.
(./main.tex (/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/book.cls
Document Class: book 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/bk10.clo))
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/listings/listings.sty
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/listings/lstmisc.sty)
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/listings/listings.cfg))
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/fontspec/fontspec.sty
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/l3kernel/expl3-code.tex)
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def))
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
)
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/fontspec/fontspec-xetex.sty
*************************************************
* fontspec warning: "tu-clash"
* 
* I have found the tuenc.def encoding definition file but the TU encoding is
* not defined by the LaTeX2e kernel; attempting to correct but you really
* should update to the latest version of LaTeX2e.
*************************************************
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/fontenc.sty
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/tuenc.def
! Missing \endcsname inserted.
<to be read again> 
                   \def 
l.252 ...           \UnicodeEncodingName {}{"007E}
                                                  
? 

Thought: My LaTeX2e is 2016/03/31 but I heard the latest is 2017/01/01. Yet just two days ago I installed the latest texlive from https://www.tug.org/texlive.

I got this to generate a PDF for me by adding the following..

\documentclass[]{book}
\begin{document}
\end{document}

Full tex file...

\documentclass[]{book}

\usepackage{tocloft}

\newlength{\mylen} %% extra space
\setlength{\mylen}{.2cm}
\addtolength{\cftsecnumwidth}{\mylen} % add the extra space after section numbers
\addtolength{\cftsubsecnumwidth}{\mylen} % add the extra space after subsection numbers

% How we load fontspec

\usepackage{fontspec}

\begin{document}

% A sample TOC header

\chapter*{Authors' Notes}
\addcontentsline{toc}{chapter}{Authors' Notes}

\end{document}

output from the command...

$ xelatex -shell-escape texhelp.tex
This is XeTeX, Version 3.14159265-2.6-0.99996 (TeX Live 2016) (preloaded format=xelatex)
\write18 enabled.
entering extended mode
(./texhelp.tex
LaTeX2e <2016/03/31>
Babel <3.9r> and hyphenation patterns for 3 language(s) loaded.
(/usr/share/texlive/texmf-dist/tex/latex/base/book.cls
Document Class: book 2014/09/29 v1.4h Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/bk10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/tocloft/tocloft.sty)
(/usr/share/texlive/texmf-dist/tex/latex/fontspec/fontspec.sty
(/usr/share/texlive/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/share/texlive/texmf-dist/tex/latex/l3kernel/expl3-code.tex)
(/usr/share/texlive/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def))
(/usr/share/texlive/texmf-dist/tex/latex/l3packages/xparse/xparse.sty)
(/usr/share/texlive/texmf-dist/tex/latex/fontspec/fontspec-xetex.sty
(/usr/share/texlive/texmf-dist/tex/latex/base/fontenc.sty
(/usr/share/texlive/texmf-dist/tex/latex/euenc/eu1enc.def)
(/usr/share/texlive/texmf-dist/tex/latex/euenc/eu1lmr.fd))
(/usr/share/texlive/texmf-dist/tex/xelatex/xunicode/xunicode.sty
(/usr/share/texlive/texmf-dist/tex/latex/tipa/t3enc.def
(/usr/share/texlive/texmf-dist/tex/latex/euenc/eu1lmss.fd))
(/usr/share/texlive/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/share/texlive/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/share/texlive/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/share/texlive/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/share/texlive/texmf-dist/tex/latex/graphics-cfg/graphics.cfg)
(/usr/share/texlive/texmf-dist/tex/xelatex/xetex-def/xetex.def
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/infwarerr.sty)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ltxcmds.sty)))))
(/usr/share/texlive/texmf-dist/tex/latex/fontspec/fontspec.cfg)))
(./texhelp.aux) (/usr/share/texlive/texmf-dist/tex/latex/tipa/t3cmr.fd)
[1] (./texhelp.aux) )
Output written on texhelp.pdf (1 page).
Transcript written on texhelp.log.

@clayball, when I try the same thing I don't generate a PDF. The log report is:

This is XeTeX, Version 3.14159265-2.6-0.99996 (TeX Live 2016) (preloaded format=xelatex 2017.3.15)  17 MAR 2017 11:18
entering extended mode
 \write18 enabled.
 %&-line parsing enabled.
**mini.tex
(./mini.tex
LaTeX2e <2016/03/31>
Babel <3.9r> and hyphenation patterns for 22 language(s) loaded.
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/book.cls
Document Class: book 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2016basic/texmf-dist/tex/latex/base/bk10.clo
File: bk10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
)
\c@part=\count79
\c@chapter=\count80
\c@section=\count81
\c@subsection=\count82
\c@subsubsection=\count83
\c@paragraph=\count84
\c@subparagraph=\count85
\c@figure=\count86
\c@table=\count87
\abovecaptionskip=\skip41
\belowcaptionskip=\skip42
\bibindent=\dimen102
) (./mini.aux)
\openout1 = `mini.aux'.

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 2.
LaTeX Font Info:    ... okay on input line 2.
LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 2.
LaTeX Font Info:    ... okay on input line 2.
LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 2.
LaTeX Font Info:    ... okay on input line 2.
LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 2.
LaTeX Font Info:    ... okay on input line 2.
LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 2.
LaTeX Font Info:    ... okay on input line 2.
LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 2.
LaTeX Font Info:    ... okay on input line 2.
(./mini.aux) ) 
Here is how much of TeX's memory you used:
 219 strings out of 495086
 2271 string characters out of 6174758
 49147 words of memory out of 5000000
 3629 multiletter control sequences out of 15000+600000
 3640 words of font info for 14 fonts, out of 8000000 for 9000
 319 hyphenation exceptions out of 8191
 23i,1n,17p,126b,36s stack positions out of 5000i,500n,10000p,200000b,80000s

No pages of output.

Okay, at http://tex.stackexchange.com/questions/358996/fontspec-warning-tu-clash I found that I needed to run sudo fmtutil-sys --all. That resolved the fontspec clash, but I have a new error:

kpathsea:make_tex: Invalid fontname `[fonts/PTSansNarrow-Regular.ttf.ttf]/OT', contains '['

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! fontspec error: "font-not-found"
! 
! The font "PTSansNarrow-Regular.ttf" cannot be found.
! 
! See the fontspec documentation for further information.
! 
! For immediate help type H <return>.
!...............................................  
                                                  
l.30 {PTSansNarrow.ttf}

For reference, PTSansNarrow-Regular.ttf is very much in my fonts directory. 😢

@pydanny hmm.. have you tried this using TeXMaker? The log/error output is generally informative and helpful.
The build options for XeLaTeX work for me. As does the quick build for DVI->PS.
Modifying the options via Option=>Configure Texmaker=>(Commands and Quick Build) may prove useful.
Wish I could be more helpful.

@clayball, I'll give TeXMaker a try!

I think it is adding an extension for you: note PTSansNarrow-Regular.ttf.ttf is what it was searching for.

What is your current font declaration?

@pydanny, best of luck with everything!

Also, I should mention that I cannot reproduce the initial error. My guess is it's related to your current font declaration.

Strangely when I look at the PT Sans Narrow font on my comp, it comes in a .ttc font collection rather than an individual file. Had you generated them manually?

@mpacer, the font declaration causing the problem is:

\setsansfont [Path = fonts/,
    UprightFont = PTSansNarrow-Regular.ttf,
    BoldFont = OpenSans-Bold.ttf,
    ItalicFont = AvenirNextCondensed-Italic.ttf
 ]
{PTSansNarrow.ttf}

The font is stored in a fonts directory. It's also in my Mac's fontbook utility. Not sure if there's a conflict.

However, what've discovered though is that when I comment out this command, the book compiles without a problem. In the rendered book's section on typographical conventions, everything looks fine. HOORAY!

So I think the problem is resolved. However, since the book is 527 pages, it might be a while before we discover any problems.

Does get you a functional font declaration? My guess is that if you don't pass an explicit Extension parameter it defaults to Extension = .ttf which seems backwards for xelatex given it's otf support, but 🤷‍♀️.

\setsansfont [Path = fonts/,
Extension = .ttf,
UprightFont = PTSansNarrow-Regular,
BoldFont = OpenSans-Bold,
ItalicFont = AvenirNextCondensed-Italic
]
{PTSansNarrow}