The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/1a64f613563471c7f8ce3659b4fcad1b.gif" -- '\Large \displaystyle m \frac{dv}{dt} =qE-fv '
returned status = 126
Image not found!
Please try the debugging script