The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/8bef3f87aa24c4d0c9a34c198f6bbc54.gif" -- '\Large \frac{1}{\sqrt{s}(\sqrt{s}+\lambda)} '
returned status = 126
Image not found!
Please try the debugging script