The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/f519bf1da54d65f706a53ce64c6e27da.gif" -- '\Large \displaystyle R_{ad}=-\frac{(1/k_1+1/k_2)(k_1+k_2)}{FA\Gamma_{\text{max}}(b_1-b_2)(k_1-k_2)} '
returned status = 126
Image not found!
Please try the debugging script