The shell command
"/home/hocmai/cgi-bin/mimetex.linux" -e "/home/hocmai/moodledata/filter/tex/e7cb33acec0f97494d41cd49f6d5bf60.gif" -- '\Large y = \log _5 \left( {x^2 - 3x + 2} \right) + \frac{1}{{\sqrt { - x^2 + 4x + 5} }}'
returned status = 126
Image not found!
Please try the debugging script