So, the Live View worked with the 6/21 nightly build for 5 or so minutes (was able to use live view after several camera restarts). It now has the same issue as before - either a black screen or green screen after starting live view. Occasionally the screen displays a colored pattern of dots or lines. This is only when entering live view and behavior changes with no changes to any options in the ML or canon menus. Photo taking only displays black.
I very much do appreciate your responses dmilligan!
I very much do appreciate your responses dmilligan!