Hi.
Actually it's me Heather
We got a French friend to phone the shop where we bought the oven.
GOOD News Not a serious problem.
Just pull out main plug and leave oven off for an hour or so.
Reset time and everything should be OK
It is caused by 'poor fluctuations' which confuses the computer. So Er 08 is "pas grave"!!!!
Heather in Northern Ardeche, November 2010