Using Open Sans in XeLaTeX with fontspec error

Question

I am trying to use Open Sans with pandoc but always get the Following error when I try to generate the PDF using XeLaTeX:

xdvipdfmx:fatal: This font using the "seac" command for accented characters...

Output file removed.

I have installed Open Sans directly from Google Fonts.

YAML Meta:

---
papersize: b5
geometry:
- top=0.8in
- right=1.4in
- bottom=0.8in
- left=1.4in
linestretch: 1.5
fontsize: 12pt
mainfont: Open Sans
---

Headers:

\usepackage[dvipsnames]{xcolor}
\usepackage{hyperref}
\definecolor{red}{HTML}{B53441}
\hypersetup{
  colorlinks=true,
  urlcolor=red
}

The command I use to generate the File via pandoc:

pandoc -o test.pdf -H headers.tex yaml.txt Book.md --toc --toc-depth=2 --css epub.css --epub-cover-image=Cover.jpg --pdf-engine ~/bin/xelatex

If I remove the mainfont line from the yaml meta and add the latex font headers instead I get a different error:

Error producing PDF.
! Dimension too large.

These are the headers which cause the error:

\usepackage[default,scale=0.95]{opensans}
\usepackage[T1]{fontenc}

I am not very familiar with LaTeX so this error might be caused because I am using a definition intented for pdflatex with xelatex

Answer 1

Don't use

\usepackage[default,scale=0.95]{opensans}
\usepackage[T1]{fontenc}

with xelatex. This commands are only for pdflatex. Do something like this instead:

\documentclass{article}
\usepackage{fontspec}
\setmainfont{Open Sans}
\begin{document}
blub
\end{document}