The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/5c055dd9c6379a552439850026e7adbb.gif" -- '\Large \tan'\''(t) = \frac{1}{\cos^2(t)}=1+\tan^2 t.'
returned status = 126
Image not found!
Please try the debugging script