Ouch. Got the same thing. Also got the blue screen. First some "funny" thing about taking a picture of the calendar of todays date... then the one with "bricked in it". Could not read, because it was flickering, and I figure to pull the battery instead.
Restarted it and Camera works, but It has been altered (bricked?) because I cannot get the ML to show up in LV.
Tried to restore camera settings, but this does not change anything. Tried booting camera with other card (old ML version), but same thing happens here. Pressing LV gives me live view, but no magic lantern. I can get to ML-menu by pressing trash, but I don't want to mess around anymore.
What is best practice from here? Install Canon original firmware before going back to old ML?