The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/8462a8f7d1410804ec54d084bce287bc.gif" -- '\Large \frac{1}{k^2} < \frac{1}{k(k-1)} = \frac{1}{k-1}-\frac{1}{k},'
returned status = 126
Image not found!
Please try the debugging script