I hadn't changed anything when the error message appeared. Thinking it was just needing new ink, I then changed the cartridges to see if that helped, but it did not. The cartridges I use have always been genuine canon ones.
I have just discovered this forum after spending alot of money on new ink refills for my mp610 printer which I was very happy with until now. I'm seeing many others have the same error message regarding the printer head. I'd just ordered another Cano...