The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/021c873488f4ebfdc18cee681da0b3bf.gif" -- '\Large (c^{ \alpha} \text{ or } c^{\beta}) '
returned status = 126
Image not found!
Please try the debugging script