The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/241baee09858b874e1214b4aa64be4b6.gif" -- '\Large \frac{3}{4^{k+1}} = \frac{3}{4}\cdot \left( \frac{1}{4}\right)^k,'
returned status = 126
Image not found!
Please try the debugging script