I have an error code 70 on my canon 60d. It started when I got it a little wet. None of the manual modes worked for a couple days, but it dried out and worked normally for a day after that. Then I started getting an error code 70. I've tried using different cards, batteries, and lenses. After reading the this thread I tried booting it in C mode. The camera has booted a couple times in that mode, but not consistently. I haven't installed ML on this camera or any of it's cards. (I have on other cameras.) I'd appreciate any help.