Very sorry for the delay in responding. Been tied up with some other things and computer was in the shop for some maintenance.

Thanks for the replies. I tried copying and pasting, without inserting a new paragraph, before I'd seen your reply Paul. It worked till I started trying to move some of the graphics around then the same thing happened. I eventually managed to get it to work by inserting some carriage returns and hard page breaks. The formatting is ugly but it at least seems stable.... for now.