erk.. that sounds a little bit like the one I had that I had to send back.
Does
k3flasher (used directly) report anything more sensible? like for example can you get it to run:
me@dev /usr/local/src/k3flasher $
sudo ./k3flasher mx35to2_mmc.bin info
(dont post the output obviously)
in essence KUBRICK is designed to obfuscate such details from you. a
k3flasher run directly gives you a few more options as the output is more verbose.
Hope that helps.