Actually, I have the same problem. The game says that the cities have no access to bananas, silk, gems, clams, or fur. Which there is none of on the map to begin with. I checked in the Crossroads Concepts section of the Civilopedia and from the wording in that, I guessed that maybe your major guild can only be spread in cities that have one of the 4 other major guilds, but no such luck, same message.
I think it mostly just has to do with the fact that the Crossroads map doesn't have any of those resources on the map.