The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/d4813262e6a02dff30d14f1f781d2ba4.gif" -- '\Large f(x,y,z)=xy+2z'
returned status = 126
Image not found!
Please try the debugging script