No Scroggs, I screwed up!
Inadequate reading.
Plead pressure of overwork even on a Saturday with 4 PCs line up on the bench all playing silly bu ggers because of one of my otherwise favourite Applications - Zone alarm. Ver 4 was supposed to overcome instability and compatibility problems but no sign of that yet.
Glad you got it sorted and hope there's some learning to be done for the rest of us. Well done Richard.