On Eleuthera, it is the governor of Alice Town which causes the problem. I've edited "periods.c" to make Alice Town English and renamed the governor Edward Bull; you won't have a copy of that version of the file but you can do a similar edit, or I can upload mine. Alice Town is English by default, was set to Spanish in "Early Explorers" in the original version of "periods.c", and I commented out the line which makes it Spanish.
I don't know the governor's original name, therefore can't look for him in any files. Besides, I've no idea how you've set up generic governor tasks, e.g. LoM's and ship-hunting quests.Did you find that governor in the character init files?
He should have a .GroupDialog attribute like the other governors do.