Hello

Convington.sty is a linguistic style for presenting interline
translation. I attach a pdf file as an examnple. The typical 
file looks as follows.

\documentclass[12pt]{article}
\usepackage{covington}
\begin{document}


\begin{examplecov}
\gll Marun ngeerne.
Boy\textsc{-NOM} sleep. 
\glt 'The boy is sleeping'.
\glend 
\end{examplecov}
\end{document}

So have added \usepackage{covington}
to org-format-latex-header, as I have done before. However when I run 
org-preview-latex-fragment, no png are generated, I even do not see a
buffer containing possible latex errors.

Any idea what to do?

Uwe Brauer