Enabling buildings quick question

Im trying to open up the higher level cannon buildings for the byzantines. And Im using the retrofit/grand unit add on mod.

To this end Ive gone into the data, export_descr_buildings file. The first city based gun building is the gunsmith with this entry-
gunsmith city requires factions { northern_european, middle_eastern, eastern_european, greek, southern_european, } and event_counter gunpowder_discovered 1

The next level building up is the cannon maker with this entry-
cannon_maker city requires factions { northern_european, timurids, egypt, moors, turks, eastern_european, greek, southern_european, } and event_counter gunpowder_discovered 1

As you can see Ive added greek to the list of factions that can build said building. When I load the game the cannon maker is buildable but the building name appers as cannon_maker rather than simply cannon maker. And I have no idea why.

Oh and Ive also tried substituting the word greek for byzantium with similar results.

Any help would be appreciated. Cheers!

You haven't added appropriate entries for "greek" into export_units.txt, so its using the default entries. Look at the other entries for cannon_maker and you'll notice that the other cultures (like norther_european) have an entry {cannon_maker_northern_european}<tab>Cannon Maker but that the greek culture does not. Copy the entry and replace norther_european with greek, delete the string.bin file and reload the game.