I've started using Skipper yesterday. Everything was going OK, until the program stopped allowing me to add more foreign keys to an entity. I can add the new field, but the "FK" column is now disabled (please see picture). This is even more strange, since yesterday I was able to set 2 foreign keys, on another table. I'm new to this, so does anyone know what's happening?
I don't have an ORM / MVC associated.