It's started happening since the maintenance last night/this morning. Copying a listing (which I successfully completed last night) now brings up the same API error. They've screwed about with something.
Ah well, I'm selling very little abroad now anyway, due in part to limited visibility and probably the recession too. I'll just list to the UK and try periodically to make an item available to these darn furreners every week or so.
I suppose it might mean I get less 'losses' on the few Italian sales I make.
Baff