The shell command<br />"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/91040a69e49658f7b560b64a4cd2a2dc.gif" -- '\Large  
\mathbf{N} \cdot (\mathbf{r} - \mathbf{r}_{0}) = 0, 
'<br />returned status = 126<br />
Image not found!<br />Please try the <a href="https://mycourses.aalto.fi/filter/tex/texdebug.php">debugging script</a>