I'm not 100% positive this mod will function correctly with patches prior to the Summer patch. It definitely does not function with patches prior to the Spring patch (it actually crashes due to changes Firaxis made to the database in the patch). That said, a problem with a building being avail to all civs is probably an issue with the civ mod itself rather than a conflict with this mod. Building restrictions are based on a field in the Buildings table that defines a required trait to build. If that's NULL or something is wrong with the Trait then everyone can build the building.