The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/e66d9e27ad85e751ebda2d26cac5143b.gif" -- '\Large i^{2k} = (i^2)^k = (-1)^{k}'
returned status = 126
Image not found!
Please try the debugging script