The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/94585c4533e7b9a285b08363b079db0b.gif" -- '\Large \frac{f(x+h)-f(x)}{h}+\frac{g(x+h)-g(x)}{h}\to \ f'\''(x)+g'\''(x)'
returned status = 126
Image not found!
Please try the debugging script