Can't load Northern Ireland

After following the instructions for the real name and German National team fixes Republic of Ireland is grayed out and yellow triangle says "require minimum of 12 teams for next year's Airtricity first division, found 8"
Republic of Ireland, not Northern Ireland, sorry for the wrong title.
Help?

Are you running any other editor data?
If you are deselect it and try again, That's the usual cause of problems such as this.