The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/a5883d2a03fbe8ce262f66e3a327af3c.gif" -- '\Large \mathbf{k}=(0,0,1)'
returned status = 126
Image not found!
Please try the debugging script