It's been 5 days since you commented and I've only just seen it unfortunately, although no longer relevant, I can assure you it does work. ML runs in parallel with Canon firmware. If there's a card in the camera with ML installed on it, it will attempt to run. No card with ML on it, camera boots normally. I've tripled checked both solutions. This post has also been promoted by @autoexec_bin, the official ML Twitter account. You either did something different or your camera is running a different version of ML than mine on a different camera model.