A few days ago my comfort II systems started announcing "zero" repeatedly. I did a system reset, and the received a "wrong text" displayed on my KP06s. I did a vocabulary/sentence/LCD date upgrade and the system is now back to normal, except that all the zones are displayed and announced by their zone number, i.e. Zone 1, instead of front door.
I am not sure how to resolve this, and would appreciate any assistance.