Many thanks.
As I said, I'll keep trying next week. The 4GB figure is an estimate but I chanced to be looking at the screen shortly before a couple of failures and that is the point it had reached. Unfortunately, the error message covers the progress statistics so I lose to opportunity to check them when the machine is unattended.
I'll report back in due course and let the FTM Members know whether the matter is resolved and how or, if continuing, seek further advice.
Thanks again.
