http://community.sigames.com/eve/for...2/m/7162067412
This will tell you how make the new league playable. You will have to use a current league format, though. Making a new country will be hard. The only thing that will work would be re-naming a current country and giving it all the attributes that you want. I don't know much about making a New Nation, but if you need help switching the leagues, I'll help you out a bit. The biggest advice I can give you, is to go in steps. After each step, try it in-game, and if it causes the game to crash, you can pin point exactly what went wrong. If you do everything at once, and the game crashes, there are a plethora of things that could have caused the crash, and you may never find out what is wrong (I know from first hand experiance). Always keep a back-up DB too.