The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/1bd900fa6fb1caa9d68670c04665107b.gif" -- '\Large \sin'\''(t)=\cos(t).'
returned status = 126
Image not found!
Please try the debugging script