sorry to hear you had that problem. sadly I had something similar, the guys here were great trying to help me but I ended up taking the camera to Canon Repairs service and they had to change the main board which cost me £300:((
I can not say 100% if the issue was related to ML or something else.(third party battery,corrupt CF card or and hardware issues might have caused ot) I'd never know. All I know is that ML is a great tool, I do appreciate it so much ,but now I am a bit too hesitant to install it back may be until I change my body or at least when I have a back up camera.I know a lot of people enjoying the great tool,which I envy and I look forward to having it back, hopefully with a new body.
and good luck solving the issue.
best
I can not say 100% if the issue was related to ML or something else.(third party battery,corrupt CF card or and hardware issues might have caused ot) I'd never know. All I know is that ML is a great tool, I do appreciate it so much ,but now I am a bit too hesitant to install it back may be until I change my body or at least when I have a back up camera.I know a lot of people enjoying the great tool,which I envy and I look forward to having it back, hopefully with a new body.
and good luck solving the issue.
best