Common markets not for empires?

I tried setting up a common market for my two nations to make contracting easier, but it doesn't seem to work. I can't make my slave join.

I guess it's either because I don't understand how to include new nations. Or because one cannot make a common market for ones own countries.

What should I do?

You should be able to add your own countries. Many do just that, CMs just for themselves. I think its a vote thing, just have your slave apply and your main vote yes and it should be in.

I did and I did vote. It eventually said the joining was agreed, but in the slave country it continues to insist that it isn't member of any CM.

Edit: that was days ago. I just checked now and now there was - another - invitation that I accepted and now it works.

Meanwhile, as I posted elsewhere, this lost part of its purpose because I can't make automatic contracting work....

Meh, you'll have to wait for someone who uses CMs a lot to help you out there. I never did use them, or rarely I should say. All this contracting stuff and averaging supply quality does me 'ead in.

Too bad, cause it would save you some money.

Lol, yes, agreed. As I was recently trawling through the best enterprises recently to try to find ways to improve mine, I saw some evidence of this making a vast difference.

I will be looking into it, hope I dont run into the problems you are having.

I made it work. See other thread.