Thanks for the info... Unfortunately, the scenario I am creating is based on a specific historical operation and it requires a lot of [historical!] barbed wire -but I can now certainly see where the problem lies if the wire is being counted as a unit. It's a shame that the wire isn't part of landscape setup like roads, hedges, etc., what with wire being pretty much a neutral kind of barrier - although, yes, I can see in a setup phase, a person is going to want to put it to their own best possible use. Stil, you have answered my first question and now, in response, I think the word I want here is DAMN! Heheh!
As far as the map size goes, I think I must have just encountered one of those quirky computational device problems, as I have created bigger maps and still been able to adjust the size of them; but this one just doesn't want to know!
Anyway, no matter, and thanks again for the reply.
Cheers.