yes, i've realised the SCHEDULE page does have a purpose - it's the way to delete or edit programmed timers - so this bug makes the box not really fit for purpose.
i suppose that not being able to delete or edit programming info is a slightly better situation than simply not being sure your programme will record at all, or whether a random power off will screw it up. but really...
is it actually legal under UK trading laws for humax to sell their gear in this unfinished state?