Thanks everyone for the help, sorry it's taken me so long to get back.

The customer service were pretty helpful - got me to send a photo of my game box, manuals and the like to prove I wasn't trying it on, then sent me a game code for the extra units. Obviously leaves me without the campaign map, but not too bothered about that.

I have some other daft questions which I'd love answers too, although I'm still scanning through the forum to see if they exist anywhere else:

1) Why do some region capitals have 4 contruction sites, but others only one? Is it population based?

2) I have a fleet of ships stuck in port at London. Every time I try to order them out, a apatronising voice tells me that ships can't travel over land. I'm also unable to send another ship into the port. Just a bug?

3) What difference do bayonets make? Is it just a charge bonus? Or an increase in melee?

I have to say, the manual with this iteration of the series is pretty disappointing. Questions 1 and 3 above are things which I think would have been fully covered in previous game manuals. Another example is pikemen. I can guess what the different formations do, but there's nothing which actually tells you. Trade theatres you only find out about by seeing AI in them and looking into them yourself. That';s another wuestions actually:

4) Is it worthwhile making up trade fleets and anchoring them in the trade theatres? Make much money?