A810, 3376 from autobuild.
MoveFocusLensToDistance -> sub_FFADA0DC -> sub_FFADA06C -> sub_FF953C94 assert at FF953CC0 checking the value of *(0x60EC + 4)
In capt seq, called from CHDK code, so this is probably the override hook.
This is possibly related to something I noticed the before, the set_now behavior of set_focus for MF only applies to cameras with cam_has_manual_focus, so even though we enter MF mode with eventprocs, it still tries to set focus in the hook. It would probably be worth changing this to just check MF mode, regardless of whether the camera has canon firmware MF, since the eventprocs set it.