The whole report cannot even compile now! And the pdf cannot open any more! I narrowed down the problem to \usepackage{mhchem}
. I was using version 3 (if it matters) but i also tried writing version=4
. I read here that there is an issue when updating latex. So i tried uninstalling and installing the previous version that was working and still nothing. An example:
\documentclass{book}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[version=4]{mhchem}
\begin{document}
\begin{equation}
\label{eq:HDO}
\ce{C$H_{1.4}O_{0.4}$ -> 1''C$H_{2}$ '' + 0.4H2O}
\end{equation}
\end{document}
It does nothing. trying to finish compile or just say:
Undefined control sequence. \begin{document}.
_{1.4}
of hydrogen actually mean. – daleif Nov 28 '16 at 16:03mhchem
package about characters that cannot be interpreted. The complaints go away when I remove the$
signs (math mode is not required for subscripts to work) as well as the quotes''
. – gernot Nov 28 '16 at 16:06