I will do that tomorrow as I am not at the same location as the printer until the morning.
I have only just been able to try your solution.
Sorry, but there is no difference. I get the same message.
I will not be in this office again until Monday. So if you have any ideas I will try then.
Yes. It is updated to Yosemite.
I have just tried your first suggestion again and deleted the printers in the "Systems" section.
Now when I go to reinstall the printer it only recognises it as a scanner.
Could this be the problem?
That has worked.
Many thanks Russell.