The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/50bf11f0f601de81a6bfa39fb2c5cb26.gif" -- '\Large \displaystyle\frac{1}{\sqrt{\pi t}}+ae^{a^2t}\text{erf}(a\sqrt{t}) '
returned status = 126
Image not found!
Please try the debugging script