The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/f8059e099f3c4e0a7075d14308c49300.gif" -- '\Large \displaystyle u= \frac{zFD}{RT} '
returned status = 126
Image not found!
Please try the debugging script