The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/da453b40122c4d671411c281dd8dedd3.gif" -- '\Large f(x_{k})\to f(x_{0})'
returned status = 126
Image not found!
Please try the debugging script