The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/4d750bef710b3fa517eaa9f0cb4702e0.gif" -- '\Large \displaystyle i\propto\frac{1}{\sqrt{1-(r/a)^2}} '
returned status = 126
Image not found!
Please try the debugging script