The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/06852869bd2d3fff0ea275411c4e33e9.gif" -- '\Large f'\''(f^{-1}(x))'
returned status = 126
Image not found!
Please try the debugging script