MaixPy: Sample Project for M5StickV broken: _boot.py

Hi,
the latest (github master) version of MaixPy will not run on M5StickV. The reason is at least that in _boot.py there are numerous calls to
lcd.register()
which apparently has been removed from the lcd class
This causes boot.py to fail.
subsequent calls to
lcd.deinit()
and then calling
lcd.init()
do not solve the problem.
Any ideas?
TIA, Roland